A cold-case investigation room: evidence desk, case files and a corkboard of maps lit by an amber desk lamp

Some cases never die

Truth still waits

Evidence changes people

Same questions · different generations

Case archive · restricted access

THE MYSTERY VAULT

LETTERS FROM THE DEAD

52

CASES

260

EPISODES

260

PUZZLES

52

VAULTS

Every Case Has a Key.

FIND IT.

Your first case is waiting.

Begin the Investigation

Your First Case

An evidence table: the Zodiac 340 cipher, a marked Northern California map, crosshair symbol and case photographs

Unsolved

Case #001

THE ZODIAC KILLER

Three ciphers. Five confirmed victims. One killer never identified.

Status: UNSOLVED
Access: RESTRICTED

████████ ███ ██████ Create your free Detective Profile to unlock Case #001.

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01
WATCH THE EVIDENCE
Follow five cinematic evidence files.
02
SOLVE THE CROSSWORD
Each puzzle reveals one secret Evidence Key.
03
CRACK THE VAULT
Decode five keys to unlock the next case.

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