Investigator portraits: the Call of Cthulhu 1920s aesthetic in paint

Linnea booked a kickoff call for a Tuesday in April and opened it with a single sentence I now quote to other clients. "I want my investigator portrait to look like a photograph someone found in a box in 1973 and didn't recognise anyone in." That sentence is the whole brief for a Call of Cthulhu portrait, distilled. The painting is a photograph that's been through five decades of attic. It belongs to a person who is no longer alive. The viewer doesn't recognise the face and feels they should. Everything else about the 1920s investigator commission flows from that one image.

This piece is the painter's companion to the broader Call of Cthulhu 1920s investigator archetype article, going deeper on the paint-craft side. If that piece covers who the investigator is, this one covers how I get them onto canvas. The Prohibition-era detail decisions I sweat. The specific palette mix I use for sepia in paint rather than in filter. The period-accurate gear that earns its frame. The eye treatment that says "I have seen something" without saying it. The occupation cues that distinguish an antiquarian from a journalist from a private investigator. The character is set. The painting is the project.

Table of contents

• The painting is a photograph from 1973's attic
• Prohibition-era fashion at the level of stitching
• The sepia palette, mixed not filtered
• Period-accurate gear that earns its frame
• "I have seen something" — the eye treatment
• Occupation cues: antiquarian, journalist, private investigator
• Common mistakes in investigator portrait briefs
• Starting an investigator portrait brief

The painting is a photograph from 1973's attic

The first decision on every Call of Cthulhu portrait is the register of the painting. The character archetype article covers the broader period question. The painting question is narrower. Is this canvas pretending to be:

• A formal portrait commission from 1924, painted on the day by a working portrait painter of the period?
• A press photograph taken on assignment, slightly motion-blurred at the edges and not flattering?
• A snapshot pulled from a family album and never publicly displayed?
• A photograph that was once any of the above and has now been in a damp box for five decades?

Each register changes the brush language, the palette, and the framing. I pick one with the client at the kickoff call and the rest of the commission rides on that choice. The 1973-attic register is the most popular and also the hardest. It's the register Linnea asked for, and it's the one I'll walk through in this piece, because it's where most of the genre lives.

The 1973-attic register means three things in paint. Edges are softer than they should be. Highlights have lost their crispness. They don't snap, they bloom. The blacks have moved a degree warm because the paper backing has yellowed and bled into the image. The painting reads as having been handled. Someone has held it. Someone has put it down.

That register is a discipline. I have to keep myself from over-rendering the edges, from punching the contrast, from cleaning up the highlight on the cheekbone the way I would on a contemporary commission. The painting has to look like it has been in a drawer for a long time.

Prohibition-era fashion at the level of stitching

A 1920s portrait announces its period in the first second. The archetype article lists the cues. This piece goes a layer deeper, at the level of stitching, because the difference between a 1920s portrait that works and one that reads as costume is a few specific details a casual reference board will miss.

Things I check on every Call of Cthulhu kickoff:

• The men's collar. Detachable, starched, white. The collar attaches to the shirt with collar studs visible at the front and back of the neckline. A modern attached collar in a portrait set in 1924 is the single most common period error I correct. Detachable collars stayed common into the 1930s.
• The waistcoat. Almost always present under a suit jacket. Three-piece is the default, two-piece is the exception. The waistcoat usually has a small pocket for a watch fob, and the watch chain is often visible across the waistcoat front. If the suit is open at the front, the waistcoat is what the viewer sees most of.
• The women's hemline and stocking line. Hemline at the mid-calf, dropped over the course of the decade. Stocking line visible above the shoe — flesh-toned, pale grey, or a slightly darker tan, sometimes with a vertical seam running up the back of the calf. The seam is a strong period cue when the pose allows the viewer to see the back of the leg.
• The hat construction. A cloche hat sits low on the forehead, just above the eyebrows, and is shaped to the skull. A fedora has a clean front pinch and a creased crown, not the over-shaped trilby silhouette that's more 1950s than 1920s. A homburg is stiffer, with a curled brim and a creased top, and reads as more formal than the fedora. Pick the hat with the occupation and the social class in mind.
• The shoes. Mary Janes for women in informal contexts, T-bars for slightly more formal, oxfords for women in working occupations. Spectator shoes (two-tone wingtips) for men in lighter dress, dark oxfords for men in formal dress. Boots for outdoor or rural settings, usually ankle-height, button-side or laced.

The brief almost never specifies any of this. The reference board the client sends is usually a 2010s photoshoot in 1920s-style clothing, which is the wrong reference because the modern photoshoot has modern stylist decisions baked in. I substitute primary references from the period (actual photographs from 1922 through 1929) and we agree on the wardrobe at the colour-comp stage rather than the line-sketch stage. The wardrobe choice changes the silhouette enough that fixing it later means a near-total repaint.

The sepia palette, mixed not filtered

The single most common amateur mistake on a Call of Cthulhu portrait is reaching the final piece and adding a sepia layer in post. The portrait reads as a colour painting with brown on top of it. The viewer's eye separates the layer from the painting and the register breaks.

Sepia has to be mixed into the palette at the colour-comp stage. The whole painting is built in a tight warm-brown spectrum from the underpainting forward. The brights are bone-white, not pure white. The shadows are warm umber, not neutral black. The midtones are a controlled spectrum of yellow-ochre, raw sienna, burnt sienna, and Van Dyke brown.

A working palette for a 1924 portrait in the 1973-attic register, roughly:

• Highlights. A warm bone, mixed from a near-white tone with a touch of yellow ochre and a whisper of warm red. Never pure white.
• Midtones (skin). A base of raw sienna with white, modulated with small additions of warm red and ultramarine for the cool half-tones. The skin sits a half-stop warmer than I'd paint a contemporary portrait.
• Shadows (skin). Burnt umber with a touch of ultramarine, kept warm. Pure cool shadow on a Cthulhu portrait reads as modern noir.
• Fabric darks. Van Dyke brown for the deepest tones in wool suits, leather, and shadow. Black is mixed from deep umber brown and ultramarine, almost never used straight from the tube.
• Accents. A controlled warm red on lipstick, a cufflink, the inside band of a hat, or a single piece of jewellery. The accent is used once or twice per painting, never as a wash.

The painting is a colour painting. It is not monochrome. The colour is just heavily restrained and pulled toward the warm. A faint blue in the deep shadows under the eyes, a small green-grey in the cool half of a coat's underside, a controlled red in the lipstick. Those stay in. What goes out is anything in the brilliant-clean register. No saturated primary blues. No clean cool greys. No high-key whites.

The atmosphere work runs parallel to the palette. The cool window-light I lean on hardest in these portraits, what I call mothlight in the atmospheric character art toolkit, has to be pale enough to read as period window-light, not modern fluorescent. The warm side runs candle, lamp, or hearth. The two-source cross-light is the engine of the painting.

The Call of Cthulhu portrait is a colour painting that the viewer reads as monochrome. That's the discipline. Strip the colour to the bone and the bone tells the story.

Period-accurate gear that earns its frame

The archetype piece lists the firearms. The painter's problem is which gear earns the frame at all. A 1920s portrait full of accurate props reads as a museum diorama, not a portrait. I work to a hard rule: two props maximum. One does most of the work, one does a small supporting job, and anything beyond two has to be in the background as part of the room rather than on the character's person.

Some of the props I most often paint, with the painter's note on each:

• The pocket watch on a chain. The most useful single 1920s prop I know. It dates the painting, it tells the viewer about social class (gold chain reads upper-middle, brass reads working, fob without watch reads down on his luck), and it gives the hand something to be doing other than hanging at the side. Painted with a soft specular highlight on the case, no glare.
• The cigarette holder. For women, the long ivory or jet holder is one of the most iconic period silhouettes. For men, a lit cigarette held loose between the fingers does the same date-stamp work. The lit end is a small, controlled orange catchlight, never a halo, never a smoke plume.
• The wire-rimmed spectacles. Round, small lenses, thin wire frames. The pince-nez is more formal and reads slightly older, a late Victorian and Edwardian holdover. Push glasses up onto the forehead for the in-the-middle-of-work pose; let them sit on the bridge of the nose for the formal pose.
• The brass key. A specific period prop I lean on heavily for antiquarian briefs. A large brass key on a length of leather cord, hung around the neck or attached to a belt loop. The key is doing narrative work — it goes to a room, a cabinet, a chest the character has reason to carry the key for.
• The Kodak Brownie camera. The amateur camera of the era. Boxy, leather-strapped, distinctive silhouette. A reporter or journalist carrying one is instantly placed in the decade.
• The fountain pen and the leather notebook. The journalist's tools. The pen tucked into a waistcoat pocket with the cap visible. The notebook held in the non-dominant hand. Together they read as work-in-progress.
• The leather Gladstone bag or briefcase. A doctor's bag, a lawyer's briefcase, an antiquarian's portfolio case. Read as occupation more than as gear. Often shown at the character's feet rather than in hand.

The firearms are the prop I'm most careful with. A revolver in hand reads as cosplay. A revolver visible only as the weight in a coat pocket, where the coat hangs heavier on one side and the lining drapes against something solid, reads as a person who carries a gun and would prefer not to. The second version is almost always the better choice.

For brief discussions, the horror character art commission guide covers the wider conversation about how much horror gear belongs in the painting, and the character art commission pricing page touches on how prop density affects scope.

"I have seen something" — the eye treatment

This is the section of the painting where the Call of Cthulhu portrait either works or fails. The character has seen something. The eyes have to say so without saying so.

The four eye-treatments I cycle between, depending on the campaign moment:

• The fraction-off eyeline. The character is looking at the viewer, but their focus is sitting roughly six inches behind the viewer's head. The eyeball position is direct. The focus is not. Painted by softening the iris edge by maybe ten percent more than a contemporary portrait would, and placing the catchlight a millimetre off-axis from where the implied light source would put it. The viewer feels watched and not seen.
• The too-still eyes. A character mid-conversation looks at things at a normal rate. A character who has seen something looks at things less. The eyes in the painting hold the viewer for longer than they should. This is mostly a composition choice — the head is squared to the viewer, the pupils are dilated for a slightly cooler implied light than the painting actually has, and the brow is at rest rather than expressive.
• The whites visible above the iris. A small sliver of white visible above the iris that wouldn't be there if the eye were relaxed. It reads as the eye being held just a fraction wider than the face thinks it is. Subtle — not a horror-movie wide-eye, just an extra half-millimetre on the top edge.
• The reflection that isn't right. Painted only on the rare commission where the client is comfortable with the trick. The reflection in one of the eyes shows something that isn't in the room the character is sitting in. A doorway. A figure. A line of horizon. The viewer registers it as a catchlight first, then has to revise.

I rarely paint all four in the same portrait. The four eye-cues compound, and a character with all of them at once reads as cartoonishly haunted. Pick one. Maybe two. The restraint is what makes the painting permanent.

The wider question of when to paint the Mythos thing reflected in the eye versus leaving the eye empty is covered in the broader cosmic-horror piece on eldritch character art done right. The short answer is almost never, and when you do it, it's a load-bearing single element rather than a flourish.

Occupation cues: antiquarian, journalist, private investigator

The archetype article gives the costume basics. The painter's job is translating each occupation into specific silhouette, posture, and prop decisions that make the occupation read at thumbnail scale.

The antiquarian sits forward. The body is leaning into something the viewer can't see, a book or a manuscript or a glass case. The hands are doing fine work, often holding a small object, or resting palm-down on a surface. The shoulders are slightly rounded from years of close work. The lighting is warm and low: desk lamp, candle, reading-light pool. The painting tends toward warm browns and a single cold accent. Nadia briefed me last September for a portrait of her antiquarian character on the night she opened the wrong manuscript. The painting that shipped has her sitting at a desk, the lamp three-quarters obscured behind her shoulder, her hands flat on a leather-bound book that the viewer can see the spine of and nothing else. The eyes do the work. The book closes the scene.

The journalist stands or sits at the edge of frame. The body language is poised for movement: weight on one leg, jacket open, notebook in the off hand. The lighting is harder and slightly cooler than the antiquarian's, often a window-light streaming in from the side. The journalist's portrait wants kinetic energy held back, like a snapshot taken between two motions. The wardrobe reads rumpled but not slovenly. The pen and notebook are visible. The hat, if present, is pushed back on the head rather than worn squarely.

The private investigator sits back. The body language is watchful and at rest. Hands at the sides or in the coat pockets. The face does most of the storytelling, and the eyes are the four-cue territory above. The lighting is mixed: a warm interior pool of light around the face and shoulders, a cool exterior wash on the back of the figure suggesting an open door or a window the PI is watching. The PI portrait works when the viewer can tell who the PI is paying attention to without anyone else being in the painting.

The other Call of Cthulhu occupations slot in by silhouette adjacency. The professor and the librarian paint like the antiquarian. The reporter and the photographer paint like the journalist with a Brownie camera in frame. The police detective paints like the PI with a more formal silhouette and a visible badge. The nurse and the doctor paint like the antiquarian with a cooler palette and a more upright posture. Pick the closest of the three primary archetypes and shift one variable.

Common mistakes in investigator portrait briefs

This is the section I want every client to read before the brief lands.

• Modern photoshoot reference. A 2020s photograph of a model in 1920s-style clothing isn't a period reference. The styling, the lighting, the makeup, and the eyeline all read as contemporary. I push every brief toward primary references from the actual decade.
• Sepia as a filter. Adding sepia in post means the painting reads as a colour piece with brown on top. The sepia has to be mixed into the palette from the underpainting. There is no rescue for a sepia layer applied at the end.
• Too much gear. A 1920s portrait crammed with revolvers, lanterns, books, knives, brass keys, hats, and cameras reads as a museum diorama. Two props maximum on the figure. Anything else lives in the room or stays out.
• Modern hair under a period hat. A pompadour, an undercut, or a textured modern cut tucked under a cloche or fedora reads as costume. Period hair has to be cut and styled to the era, even where the hat covers most of it. The sideburns, the nape, and the front fringe are visible and they have to be period.
• Horror staging. Tentacles in the background, glowing sigils on the wall, a green wash over the lighting. The horror has to live in the character: the eye treatment, the hand grip, the asymmetric posture. Staging the horror around the figure breaks the photograph-from-1973's-attic register entirely.
• Caricature of period dress. The flapper-with-feather-boa-and-bootleg-flask shorthand is the visual equivalent of saying "the Roaring Twenties" in a deep movie-trailer voice. The actual decade was quieter and more varied. Resist the cliché.
• The "noir" lean. Hard cool-blue shadow, hard cool-blue lighting, neon-style backlighting. That's 1947 detective film noir, not 1924 Lovecraft. The palette and the lighting are warmer and softer than noir, and the cross-lighting is candle-and-mothlight rather than streetlight-and-rain. Keep noir on its own shelf.

If a brief sits at the seam of period and horror — a Pulp Cthulhu register, or a campaign set in the 1930s rather than the 1920s — the historical character art commission guide covers the wider period-painting toolkit, and the modern character art commission guide covers what changes when the campaign moves forward into the post-war decades.

Starting an investigator portrait brief

If you've been carrying a Call of Cthulhu investigator who hasn't been painted yet — an antiquarian who has just read the wrong manuscript, a journalist working a story that's about to consume her, a private investigator on his last case, a doctor whose patient has confessed something he can't write down, a professor mid-campaign and behind on sleep — the order form is the most direct path to a brief. Write the campaign moment and the occupation in the notes, and the kickoff call gets useful fast.

The closest references for this kind of work in the portfolio sit in the horror and historical folders, where the period restraint is doing the heaviest lifting. For a single iconic portrait, the character work service covers the standard scope and pricing. For a Keeper commissioning a whole cast — investigators, NPC contacts, the antagonists across a campaign — the GM world-building service is the right entry point, because cast-consistency conversations belong upstream of the painting.

For genre-adjacent reading: the atmospheric character art piece covers the cross-lighting toolkit (candle warmth, mothlight) the genre leans on hardest. The body horror character commissions piece covers how Mythos-touched briefs handle the rarer transformation cases. The Strahd NPC pack six weeks walkthrough shows what a multi-portrait horror cast looks like as a sustained project, and many of the same restraint principles cross over. The character art process from sketch to colour to final walks through where in the pipeline the period decisions have to be locked in, which is earlier than most clients assume.

Call of Cthulhu is a Chaosium property. The studio paints investigator portraits as personal-use commissions, never for commercial resale or publication. The painting belongs to the player. The system, the names, and the published Mythos figures stay with Chaosium and the Lovecraft estate.

Either way: write the one-line pitch first. "An antiquarian on the night she opened the wrong manuscript" is a brief. "Cthulhu investigator" isn't. The painting starts the moment you can name the night the character would point at if asked when the trouble began.