This improv game is in the following improv game categories:
For example, a player might ring a doorbell at a house, ready to pick up his date. We never get to see the date, and all characters in the scene slowly provide hints as to what might have happened to the date. The game is over when e.g. we (the audience) discover that all occupants of the house have been hauling garbage bags out of the hous, all containing body parts of the date... It need not always be gruesome, though...