Whodunnit? (2013)

Guests at a mansion investigate elaborately staged murders, knowing that one of their number is the concealed killer. The 2013 ABC competition is closer to a played-out murder party than The Traitors' social vote: interpreting how a fictional death happened is part of staying in the game. A butler host and cheerfully theatrical eliminations supply the atmosphere. This is the American reality series, not the older British panel show with the same title.