A documentary atlas of true crime

You might be standing on a crime scene.

Psychopedia maps 970 documented true-crime cases across 25 US cities, each one pinned to the address where it actually happened. Read them anywhere, listen while you walk, or let the app tap you on the shoulder when you are close.

  • Free, no ads
  • No account needed
  • Every fact traces to a source
A young woman waits to cross Ocean Drive in Miami Beach with an iced coffee and headphones; beside her feet, a chalk outline of a body and a yellow evidence marker.
970
Documented cases
25
US cities
2
Languages, natively
$0
Forever. No ads.
How it works

Three moves. The record does the rest.

Nothing is gated behind being somewhere. Browse the whole atlas from the couch, or take it out the door.

01

Open the map.

Pick a city, or start where you are. Every pin is a documented case at its real address, colored by kind, from the 1690s to today.

  • Six kinds of cases, each with its own color and glyph
  • An era slider from the 1600s to the present
  • Zoom from the whole country to a single block
The Psychopedia map at street level on Ocean Drive, Miami Beach, with a case card open: cover photograph, category, title and quick facts.
02

Open the file.

Each case is a written dossier: what happened, when, exactly where, with archival photographs and the list of sources it was built from. On narrated cases, press play and a documentary voice reads it to you, in English or Spanish.

  • Quick facts: year, location with a confidence level, intensity
  • Every source listed, and readable
  • Narration in both languages, rolling out across the catalog
A case file in Psychopedia: cover photograph, title, quick facts and the opening of the written account.
03

Let it find you. Optional.

Turn on proximity alerts and Psychopedia tells you when you walk near a documented scene. You choose the radius, the kinds of cases, quiet hours and a daily limit. The matching happens on your phone; your location never leaves it.

  • Off until you turn it on
  • In-app cinematic or push notification, your call
  • The same scene never repeats within 14 days
The proximity alerts settings: the master switch, trigger radius, categories, delivery mode and quiet hours.
Four friends have drinks at a sidewalk table outside a West Village bar at dusk; one of them glances at a chalk outline of a body drawn on the sidewalk beside them.

Every case on this map happened exactly there.

West Village, New York. 138 documented cases inside the city limits, pinned to the door.

What is inside

Built like a reference work, not a feed.

No points, no streaks, no autoplay. The cases, where they happened, with their sources.

A map you read like a document.

Six kinds of cases, each with its own color and glyph so they stay apart even if you are color-blind. Slide through eras, filter by city, zoom from the whole country to one block. The pins are the catalog: every droplet is a real case at its recorded coordinates.

Homicide Serial Organized crime Unrest Unsolved Heists

A whisper when you are near.

Proximity alerts, entirely on your terms.

Trigger radius100 m to 2 km
CategoriesYou choose
Quiet hoursYes
Daily limitYes
Your locationStays on the phone

Written from the record.

Dates, an address with a confidence level (exact, block, or area), archival photography with its license, and every source listed by name. Read the list yourself.

Two voices, one per language.

A documentary narrator for English, another for Spanish, the same two voices across the whole catalog. Narration is rolling out case by case, the most-visited scenes first. Put your headphones on and walk the block while it reads.

Search the way you remember.

A name, a neighborhood, a drug, a year. Search reads the full text of every case in both languages, so “Little Havana” finds what happened there, not just what was titled after it.

From the pin to the door.

The walking route from where you stand to the scene, with distance and time, or hand it to Maps and go.

You set the level.

Hide victim surnames. Reduce graphic detail. Sensitive images stay behind a deliberate tap, always, on every screen including alerts.

Keep the ones that stay with you.

Bookmark a case to come back to it later. Your saved list lives on your phone, no account required.

Bilingual, natively.

Every case in English and in Spanish, edited for a Latin American reader rather than machine-translated. Switch the language once and the whole catalog follows: titles, dossiers, search, alerts and narration.

Know one we are missing?

Send it from the app. An editor reads every suggestion and checks it against public records before anything is published.

A couple walks down a hotel corridor with a weekend bag, chatting; on the carpet beside a room door, a chalk outline of a body and a yellow evidence marker.

Sometimes the address is a hallway.

Cases are pinned to where they happened: a corner, a lobby, a bar, the street you live on.

25 cities

From Salem in 1692 to Miami last decade.

Three cities carry the deepest catalogs. The rest are the places a single famous case pulls people across the country to see.

Miami 219 Los Angeles 174 New York 138 Chicago 93 Seattle 70 New Orleans 52 San Francisco 38 Washington, DC 38 Las Vegas 36 Philadelphia 34 Boston 32 Denver 6 Cleveland 5 Detroit 5 Orlando 5 Austin 4 Dallas 4 Milwaukee 4 Savannah 3 Fall River 2 Gainesville 2 Salem 2 St. Louis 2 Tombstone 1 Villisca 1
A woman walking a small dog on a Boston brick street looks up at a chalk outline of a figure slumped over a second-floor windowsill.
From the files

Eight of the 970.

Each one opens into a written account, its sources, and the exact spot on the map. Every case reaches you with a picture: an archival photograph where one exists, a map of the exact coordinates where it does not.

Search results in Psychopedia for “Ocean”: a list of cases with cover photographs, year, category and city, including The Assassination on Ocean Drive, 1997, Miami.
Unrest

The Salem witch trials

1692 · Salem, Massachusetts

Homicide

The assassination of Abraham Lincoln

1865 · Ford’s Theatre, Washington, DC

Unsolved

The Villisca axe murders

1912 · Villisca, Iowa

Organized crime

The St. Valentine’s Day Massacre

1929 · North Clark Street, Chicago

Homicide

The Black Dahlia

1947 · Leimert Park, Los Angeles

Serial

The Zodiac’s last confirmed victim

1969 · Presidio Heights, San Francisco

Organized crime

The Mutiny Hotel, clubhouse of the Cocaine Cowboys

1979 · Coconut Grove, Miami

Heist

The Gardner Museum heist

1990 · The Fenway, Boston

A man reads his phone over an espresso outside a French Quarter café in New Orleans; a chalk outline lies on the sidewalk beside him and another hangs from the window above.
Standards

The rules this was built to.

  • Every fact traces to a source.Each case carries the archives, court records and reporting it was written from, and you can read that list yourself.
  • No gore, ever.Victims are treated as people, not spectacle. Graphic or sensitive images stay hidden behind a deliberate tap.
  • Presumption of innocence.Recent cases stick to publicly reported facts, and anyone not convicted is named only as alleged.
  • Corrections are welcome.If something is wrong, or you are connected to a case and want it reviewed, the request reaches us in three taps.
  • Spanish is native, not a patch.Every case is written in English and Spanish, because true crime in Spanish is badly underserved.
  • Free, with nothing attached.No ads, no purchases, no points, no streaks. Nothing is gated behind standing in a particular place.
Get the app

Free. No ads. No account.

Psychopedia is in testing on iOS, with Android to follow. Download it, pick a city, and walk out the door.