The Posthumous Investigation
Beginner's Guide
Everything a new detective needs before starting their first loop in The Posthumous Investigation. Core mechanics, first-run strategy, Thinking Board orientation, and the mindset that separates a solved case from an infinite reset spiral.
๐ญ What Kind of Game Is This?
The Posthumous Investigation is a point-and-click mystery set in 1937 Rio de Janeiro. You play as a private detective hired by Brรกs Cubas โ a wealthy man who has just been murdered โ to investigate his own death from beyond the grave. The premise sounds absurd, and it is, deliberately so: the game is inspired by Brazilian literary satirist Machado de Assis, whose unreliable narrators and dark comedy are woven into every scene.
What sets it apart from other mystery games is its absolute refusal to hold your hand. There are no blinking objective markers. No hint system. No confirmation sound when you find an important clue. The game treats you as a professional detective and expects you to behave like one: observe, deduce, and connect evidence yourself on the Thinking Board.
The other defining feature is the time loop. Every in-game day resets when you fail to solve the case โ or when you choose to reset manually. But the knowledge you gain persists. Over successive loops you build a picture of the 14 suspects' movements, motives, and secrets that no single loop could reveal alone.
This is not a casual mystery novel game. It requires patience, note-taking, and genuine deductive reasoning. It is also one of the most rewarding mystery experiences of 2026 precisely because of that difficulty โ when the case clicks into place, it feels earned.
๐ The Core Loop โ How Time Works
Each loop represents a single day in 1937 Rio. Time advances in real-time as you move between locations and engage in conversations. When the day ends โ either because the murder succeeds, you run out of actionable leads, or you trigger a reset โ you wake up at the start of the same morning with full memory of everything you experienced.
What Resets Each Loop
- ๐ด Your physical position (you always start at the same location)
- ๐ด NPC states โ all characters return to their starting positions and moods
- ๐ด Item interactions โ objects you moved or used return to their original state
- ๐ด Any actions you took (unlocked doors, triggered events) are undone
- ๐ด In-game time itself โ the day restarts from 07:00
What Persists Between Loops
- ๐ข Your memory โ every conversation, observation, and clue you found
- ๐ข Thinking Board entries โ all pinned clues and connections carry forward
- ๐ข Dialogue unlock state โ topics you can now raise with suspects remain unlocked
- ๐ข Your understanding of each character's true schedule and behavior
This asymmetry is the game's core design tension. The world forgets; you remember. Your accumulating knowledge is the only thing that makes each loop more productive than the last. A loop where you learn nothing new is a rare exception โ even failed conversations reveal what a suspect is hiding.
๐ Your First Run โ What to Actually Do
Many new players make the mistake of treating their first loop as a solvable run. It isn't โ and shouldn't be. Here is a structured approach for your opening loops:
Loop 1 โ Pure Reconnaissance
Do not attempt to prevent anything. Do not try to accuse anyone. Your only goal is to map the world: identify every accessible location, note every character you encounter, observe their movement patterns, and catalogue every interactive object. Pay attention to the clock. Note what time each character arrives at or leaves a location.
- Visit every location at least once
- Speak to every character you encounter โ even minimal introductory dialogue
- Note the time displayed when you reach each location
- Do not skip cutscenes on your first loop โ every detail is potentially relevant
Loop 2 โ Targeted Conversations
Now that you know where everyone is and when, use your second loop to have proper conversations. Ask every available topic with every suspect. You will not unlock all dialogue yet โ some branches require information you don't have. Note which topics each character refuses to discuss or deflects from. Avoidance is evidence.
Loop 3 โ Follow the Contradictions
By now you have at least two characters whose accounts of the same event disagree. This loop, focus exclusively on those contradictions. Your job is to find a third source โ a document, an object, or a third character โ that corroborates one account and invalidates the other. Each resolved contradiction is a Thinking Board connection waiting to be made.
๐ Thinking Board โ First Look
The Thinking Board is your primary investigation interface. Think of it as a cork board where you pin evidence cards and draw connections between them with string. The analogy is literal โ the game's visual metaphor matches the mechanic perfectly.
Clues are automatically added to the board as you discover them. Your job is to manually draw the connections between them. A clue about a suspect's whereabouts must be linked to a clue about the murder's time window. A financial motive must connect to the victim's estate documents. The board is not decorative โ the game checks your connection logic before allowing an accusation.
Three Types of Nodes
Physical clues โ objects, documents, observations. These form the foundation of any chain.
Things characters told you. Subject to contradiction โ always cross-reference with evidence.
The final node. Only appears when you attempt to make a formal accusation. Must be connected to both motive and opportunity.
For a full deep-dive into Thinking Board strategy, see our dedicated Thinking Board Guide.
๐ฅ Understanding the 14 Suspects
The Posthumous Investigation features 14 characters, each with a fixed daily schedule, unique dialogue tree, hidden motive, and relationship to Brรกs Cubas. No character is without motive โ the game's literary roots mean everyone is morally compromised in some way.
Each suspect operates on an internal clock. They move between locations at predictable times, meet other characters at fixed points, and react differently to you depending on the time of day and what you know. A suspect who is friendly at 09:00 may be hostile at 14:00 if you've spoken to someone who warned them about you.
How to Approach Each Suspect
- Establish baseline first: Complete at least one full observation of their schedule before engaging in deep conversation
- Note emotional state changes: A suspect who seems nervous at a specific location is worth returning to later in the same loop
- Cross-reference testimonies: Every character's account of where they were should be checked against another character's account of the same time window
- Leverage loop knowledge: Information from a previous loop can be introduced into a conversation even if the suspect doesn't know you know it
Full character profiles, schedules, and manipulation strategies are in our Characters guide.
๐ The 8 Rules of Good Detecting
Observation Before Action
Every loop should begin with 15โ20 minutes of pure observation. Move through locations silently, note positions, note the time. Action without observation is guesswork.
Write Everything Down
The game tracks clues automatically, but it doesn't track your interpretations. Keep a physical or digital notepad for your own deductions โ which accounts contradict, which times don't add up, which characters avoid which topics.
Every Lie Is Evidence
When a character denies something you know to be true, that denial is as valuable as a confession. Pin it on the Thinking Board. A deliberate lie implies motive for concealment.
Time Is Non-Negotiable
The 24-hour clock cannot be paused outside of menus. Route your movements efficiently. If you need to speak to Character A at 09:00 and Character B at 11:00, plan the locations between them so you don't waste transit time.
Contradiction Hunting Is Your Main Job
Your primary task is not to find the murderer โ it's to find contradictions. The murderer reveals themselves through the contradictions their presence creates in other characters' testimonies.
The Board Must Be Complete Before You Accuse
Do not submit an accusation with incomplete board connections. The game will reject it. More importantly, a rejected accusation resets your loop and wastes the evidence you spent it gathering.
Indirect Evidence Is Still Evidence
You don't need a witness who saw the murder. Financial records, missing objects, overheard conversations, and behavioral anomalies all constitute valid evidence chains if logically connected on the board.
Loop Fatigue Is Real โ Take Breaks
The Posthumous Investigation demands sustained attention. If you've completed 3 loops without new progress, take a break and review your notes. Fresh eyes resolve stuck cases faster than grinding.
โ 5 Mistakes Every Beginner Makes
Accusing Too Early
The single most common mistake. Players find one compelling piece of evidence, feel confident, and submit an accusation โ only to have it rejected because motive, means, and opportunity aren't all connected on the board. Patience is the skill most required.
Skipping NPC Schedules
Rushing straight to the most suspicious-seeming character and ignoring the others. Background characters have documents, overhear conversations, and are present at locations during the crime window. Ignoring them leaves critical evidence uncollected.
Exhausting Dialogue Without Listening
Clicking through every dialogue option as fast as possible to 'unlock' the board. The actual content of what characters say matters โ half the clues are in the subtext of a deflection, not in the explicit information given.
Poor Route Planning
Wandering between locations without a plan and running out of time before reaching a critical location. On loops 3+, pre-plan your route at the start of the loop based on which suspect or location you need to prioritise.
Under-Using the Thinking Board
Treating the board as a passive log rather than an active investigation tool. The board should be opened frequently mid-loop to test potential connections as you gather new information โ not just at the end when you're attempting an accusation.
๐ Next Steps
Once you've completed your first three loops and have a handle on the basic mechanics, these are the guides that will take your investigation to the next level:
๐ฌ Demo Gameplay โ See the Mechanics in Action
Watch a full demo playthrough to see the Thinking Board, time loop, and suspect interaction systems in action before you start.
โ Beginner FAQ
How many loops should I expect before solving the case?
Most first-time players solve the main case in 8โ15 loops. With this guide, you can reduce that to 5โ8. 100% achievement hunters will need 15โ20+ loops to complete all requirements across different branches.
Can I fail permanently โ is there a game over?
No permanent failure state exists. Every loop resets the day, but your knowledge persists. The only way to 'lose' is to get stuck without new information โ which is resolved by revisiting locations or characters at different times.
Do I need to take notes outside the game?
The Thinking Board handles clue storage, but many players (including experienced ones) keep external notes for timeline reconstruction and suspect cross-referencing. The game doesn't penalise external note-taking โ treat it as part of the detective experience.
What happens if I make a wrong accusation?
A wrong accusation โ whether incomplete evidence or the wrong suspect โ ends the current loop. You return to the start of the day with all your memories intact. No progress is lost; the failed accusation itself tells you what evidence was insufficient.
Is there any content that can be permanently missed?
Some achievements require specific loop-window actions and cannot be retroactively unlocked. The main story is always completable regardless of loop count. See our Achievements Guide for the full list of missable content.
Does the game have difficulty settings?
The Posthumous Investigation has no difficulty settings by design. The challenge level is fixed โ the only variable is the player's accumulated knowledge across loops. The game becomes progressively easier as you know more, not because the systems change.