"During a party, Abaddon, a fanatic serial killer, has chosen his next victim and is about to commit a new crime… unless you are able to identify her in the trendy crowd of a Parisian nightclub. To help you, the killer has courteously sent you a few clues..." Babylon is an "escape box", inspired by escape games. Players must you their deduction skills (and real items as clues) to lead an investigation on the serial killer. This scenario is a sequel to the main game: Apocalypse, but it can be played independently. —description from the publisher