Ford Adams regains consciousness in Boston, bloody and suffering from amnesia. Information he eventually uncovers (with the help of Marie Smith) connects him to a well-known producer--who's just been murdered.
The Greene Murder Case
Scooby-Doo! and the Beach Beastie
What's New Scooby-Doo? Vol. 3: Halloween Boos and Clues
The Garden of Sinners: Paradox Spiral