How to Run Smoother Cases with Detective COA Investigation Sheets

By Van Ryder Games | Published: 2026-11-02

Category: How-to Guides

Keep your Detective: City of Angels cases moving with a simple note-taking routine and a fresh stack of investigation sheets. Here's how to track clues without slowing the table.

Quick answer

Give each player a fresh double-sided investigation sheet at the start of every case, and use a consistent shorthand for locations, suspects, and leads. That small routine keeps Detective: City of Angels gameplay moving and makes it easier to compare notes when the table splits up.

Why a consistent sheet layout matters more than perfect handwriting

Detective: City of Angels throws a lot of information at the table at once. If every player invents a different way to record clues, you spend more time decoding notes than discussing the case. A repeatable layout on the sheet—even a simple three-column split for people, places, and evidence—lets anyone pick up your sheet and follow your reasoning.

The sheets are double-sided, so you can use one side for the active case and the other for cross-case notes or a clean rewrite once your first pass gets messy. That flexibility is the main reason to keep a dedicated stack on hand rather than scribbling on loose paper.

When to replace a sheet instead of squeezing in more notes

There is no rule that says you must fill every line before starting a new sheet. In practice, a sheet becomes a liability when you can no longer tell which lead is current. If you are crossing out more than you are adding, or if two players have written over the same section, swap in a fresh sheet and transfer only the confirmed facts.

This is also where a backup pack earns its place. Extended sessions or multi-case campaigns can burn through sheets quickly, and running out mid-investigation forces players onto scrap paper—exactly the inconsistency you were trying to avoid.

Step-by-step: a smoother case routine

Hand out a fresh sheet before the first clue: Give every player a new double-sided sheet at the start of the case, even if they still have space on an old one. Write the case name and date at the top so sheets don't get mixed up later. Checkpoint: no one should be taking notes on the back of an unrelated sheet.
Agree on a table-wide shorthand: Before play begins, agree on three or four symbols for common entries—suspect, location, evidence, and dead end. Keep the key visible on the table so new players can read anyone's sheet. Mistake to avoid: letting each player invent private symbols that only they understand.
Reserve one side for confirmed facts: Use the front of the sheet for facts the table has verified and the back for speculation, rumors, and leads to follow up. This separation stops theories from hardening into false facts. Checkpoint: if you can't tell whether a note is confirmed or guessed, move it to the back.
Do a two-minute mid-case review: Halfway through the case, pause and have each player read back their confirmed facts. Correct contradictions on the spot and cross out anything the table agrees is a dead end. Mistake to avoid: waiting until the accusation phase to discover that two players recorded the same clue differently.
Retire messy sheets, not useful notes: When a sheet becomes hard to read, start a fresh one and transfer only the confirmed facts from the front. Keep the old sheet nearby until the case ends in case you need to check a crossed-out lead. Checkpoint: a replacement sheet should take less than a minute to set up.
Restock the sheet supply between cases: Count remaining sheets after each session and top up from your pack before the next game night. A pack of 50 double-sided sheets covers many cases, but only if you replace used sheets promptly. Mistake to avoid: discovering you are out of sheets after everyone has sat down to play.

Product facts

Detective COA: Investigation Sheets: Pack of 50 double-sided investigation sheets designed for the Detective: City of Angels base game. Enough sheets for multiple cases and extended play sessions, so you can replace a messy sheet without rationing.
Detective COA: Investigation Sheets