An interconnected evidence mystery

The Red
Case File

FOLLOW THE EVIDENCE.
FIND THE KILLER.
PROVE THE CASE.

Immersive evidence-based murder mysteries where you become the investigator.

The Red Case File, Case 001: The Last Bid by Julie Marquez book cover
The Red Case File, Case 001: The Last Bid by Julie Marquez, paperback cover

Case 001

3,000 registered bidders.
One of them killed him.
Can you prove who?

An interconnected evidence mystery

Enter a sophisticated case built from records, reports, correspondence and investigator workpapers. The story is not simply told to you. You must examine what happened, test every possibility and build the proof yourself.

Christmas Mini Mysteries: Ten Bite-Sized Cases by Julie Marquez, paperback cover

A pocket-size holiday challenge

Ten cases. Your verdict.

Follow the clues through ten self-contained holiday mysteries, write your theories on the facing notes pages, then check the fully explained solutions at the back.

Buy Christmas Mini Mysteries on Amazon

Your role // Investigator

How the investigation works

Examine the records
Cross-reference the evidence
Eliminate the impossible
Make your accusation
Prove the case

Each case asks you to reason across a connected body of evidence—not wait for a fictional detective to explain it.

  • Bidder records
  • Electronic access logs
  • Auction records
  • Security reports
  • Photographs
  • Correspondence
  • Floor plans
  • Medical findings
  • Investigator workpapers

New case // New evidence // Your deduction

Keep investigating.

The Weekly Case File

A new interactive mystery delivered every week.

Examine the evidence, identify the suspect and prove the case in about 10 to 20 minutes.

How it works: Day 1, a new case file arrives in your inbox. Day 4, the sealed solution arrives, after you've made your accusation. Day 7, the next case begins.

52 new cases // One year of mysteries

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