The Cold Case Files: Investigation Frameworks for Solo Horror & Mystery Roleplaying

Prefer a Light-Mode design? It's coming soon!

The Cold Case Files: Investigation Frameworks for
Solo Horror & Mystery Roleplaying

Five case investigations, fully assembled, waiting for you to walk through the door. The suspects are in position. The evidence is planted. The clock is already ticking. All you need is a set of dice and the willingness to follow the trail wherever it leads.

Each case file provides the architecture of a mystery: victims, suspects, locations, evidence, and the conspiracy hiding beneath. You provide the investigation. These frameworks are designed for solo-play, GM-less tables, or as ready-made scenarios for game masters who want investigations with depth and structure.

This book is system-agnostic. Use it with Call of Cthulhu, Delta Green, Mothership, Liminal Horror, Trophy Dark, Vaesen, or any game where investigators pursue terrible truths. Pair it with our Investigator's Oracle for the complete engine, (or use any solo oracle system of your choice.)

"Created with AI assistance initially to get formatting consistent but then extensively shaped and edited by a passionate human to serve actual play."