Broadcast: Dec. 19, 1976-Jan. 9, 1977. Wimsey stumbles across the corpse of Sandy Campbell, the most unpopular man in this district. Before long there are six suspects -- all fellow artists who have recently quarreled with Campbell. Five are obviously red herrings, only one has an alibi. Slowly Wimsey works through the list. A tiny detail -- a tube of flake white missing from the scene of the crime; an identical tube in one of the studios worries him. In an elaborate reconstruction, he shows just how the murder was committed and the killer confesses.