A launch trailer has been released for The Infectious Madness of Doctor Dekker from developer D’Avekki Studios and publisher Wales Interactive.

The Infectious Madness of Doctor Dekker is a live-action interactive story, or FMV (full-motion video) game. It’s a Lovecraftian murder mystery in which you play as a psychiatrist who must not only help the patients of the recently deceased Dr. Dekker with their problems, but also try to figure out who killed the doctor. You do this by asking questions, either by typing them in yourself or choosing from some suggested options, and looking at the evidence, watching replays, and more before you come to a conclusion. The game features over 1600 video responses, which actually set the Guinness World Record for most full-motion video in a game.

Continue below to read more about the game and to watch the launch trailer.