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The Posthumous Investigation Wiki

A dead man hired you to solve his own murder. You have one day. Fourteen suspects. And as many attempts as it takes. A hand-drawn noir mystery set in 1937 Rio de Janeiro, where every suspect has a life, a sched

Steam ↗Windows · macOS
GameWiki EditorialReviewed 5 guide topics

GET YOUR BEARINGS

About The Posthumous Investigation

The Posthumous Investigation places you in a single day that repeats until you solve a murder. You must learn the routines of fourteen distinct characters, spot contradictions, and use that knowledge across resets to stay ahead of the killer. The game offers a "Thinking Board" where you can link evidence and reconstruct the timeline, requiring pure logical deduction. Its world is a hand‑drawn 1937 Rio de Janeiro inspired by Machado de Assis, delivering a satirical and dark atmosphere without a single fixed solution.

01 / THE GUIDE

Time Loop Mechanics

Each playthrough gives you exactly one day to investigate. When the day ends, the loop resets but you retain any knowledge you have gathered, allowing you to apply insights to the next iteration. This design forces you to plan actions carefully, as only the information you keep carries forward.

The loop does not provide explicit guidance; there is "no hand‑holding" and you must decide which clues to pursue. Because the day repeats, you can experiment with different approaches while preserving deductions for future cycles.

  • Record observed schedules before the loop resets to avoid losing details.
  • Focus on contradictions first, as they often reveal the killer’s manipulation.

02 / THE GUIDE

Character Schedules

Fourteen unique characters each follow a daily routine in the 1937 Rio setting. Learning these schedules is essential because the murderer's actions intersect with specific moments in each character’s day.

Contradictions between a character’s expected location and their observed presence indicate potential lies or hidden motives. Mapping these discrepancies helps narrow down who could have committed the crime.

  • Create a timeline chart for each character to visualize overlaps.
  • Compare scheduled activities with actual sightings to spot inconsistencies.
The Posthumous Investigation official gameplay screenshot
Publisher-provided gameplay image · Mother Gaia Studio

03 / THE GUIDE

Thinking Board

The Thinking Board is an in‑game tool that lets you link pieces of evidence, statements, and timeline events. By arranging connections, you can reconstruct the sequence of actions leading up to the murder.

Using the board does not automatically solve the case; it merely visualizes relationships. You must interpret the layout to form a logical accusation.

  • Group evidence by location to see spatial patterns.
  • Link statements that reference the same time slot for clearer contradictions.

04 / THE GUIDE

Artistic Setting

The game’s world is a hand‑drawn representation of Rio de Janeiro in 1937, styled with satire, wit, and dark humor. This visual approach creates a distinct atmosphere that reflects Machado de Assis’s literary tone.

The setting supports the narrative and investigative focus with its hand-drawn style and atmosphere.

  • Observe background details for subtle hints about character habits.
  • Appreciate the artistic style to better understand the story’s tone.

05 / THE GUIDE

Platform Features

The title is available for Windows and macOS, with full controller support listed for DualShock and DualSense devices. It also includes Steam achievements, Steam Cloud, and Family Sharing.

These features are independent of the core gameplay; they simply provide standard Steam ecosystem conveniences without altering the investigative experience.

  • Steam Cloud is among the listed Steam features, which may be worth enabling in your Steam settings.
  • Try the supported controllers to see which input feels more natural for the Thinking Board.

WATCH THE GAME

The Posthumous Investigation videos

Official trailers & gameplay

INSIDE THE WORLD

Screenshots & game images

5 official screenshots

IN THIS WIKI

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COMMUNITY

Player discussion

    QUICK ANSWERS

    The Posthumous Investigation FAQ

    How does the time loop affect my progress?

    When the day ends, the loop resets but any knowledge you have gathered remains, letting you apply deductions in the next cycle.

    What is the purpose of the Thinking Board?

    It visualizes connections between evidence and timeline events, helping you reconstruct the sequence of actions before making an accusation.

    Can I play the game on Linux?

    The store listing indicates Linux support is false; the game is officially available only for Windows and macOS.

    More The Posthumous Investigation guides

    SOURCES & CREDITS

    Official resources and further reading

    Original editorial guidance. Game imagery and trailers are provided by the publisher through Steam. Media and reference links checked 2026-10-24. Game versions, supported platforms, and balance can change; consult the linked release notes for current details.