About this adventure
A series of high-profile murders across three states bears the signature of a legendary serial killer thought dead for a decade. The FBI's Behavioral Analysis Unit has been reactivated to hunt them down before the body count climbs further. Each crime scene contains a cryptic message written in the victim's own blood, referencing classified government projects from the Cold War era. The killer isn't just murdering; they're sending a message to someone and the FBI must hurry..
Prologue
The year is 2024. Across the United States, a ghost has awakened, leaving a trail of bodies and terror in its wake. Each crime scene is a macabre tableau, a message scrawled in blood that chills seasoned investigators to the bone. The victims are unconnected, yet bound by a common thread: cryptic references to long-dormant Cold War programs. As the body count rises, the FBI's Behavioral Analysis Unit is reactivated, forced to confront a killer who seems to know their every move. The question isn't just who is committing these heinous acts, but what secrets lie buried beneath decades of government silence, waiting to be exhumed. Someone within the Bureau is feeding the monster. The hunt begins now.
Your AI Dungeon Master is waiting
Play The Crimson Trail and dozens of other AI-driven DnD adventures. Solo or with friends — free to start.
Download on theApp StoreCharacters in this adventure
Pick a perspective. Each character shapes how the AI Dungeon Master tells the story.
Jason Briggs
African American · FBI Special Agent
The Killer
human · antagonist
A phantom from a buried Cold War program, methodically murdering his former handlers while broadcasting cryptic messages in blood—a predator who thinks ten steps ahead and may have allies within the FBI itself.
Nancy Glen
Caucasian · FBI Special Agent
More AI DnD adventures
Mystery520The Abductions
When villagers vanish without trace, the truth descends from the stars—and defies all understanding.
Mystery169The Phantom of Ravencrest Manor
A nobleman vanishes from a locked study—but the truth behind his disappearance may tear reality itself.
Mystery2KThe Inheritance
A wealthy industrialist lies dead in a locked study—and his killer is still in the house.
Mystery2.9KThe Diorwood House
A night in a haunted mansion becomes a race to uncover the truth before a fading ghost disappears forever.