Several criminal lawyers reunite every year in the Swiss mountains to entertain themselves with fake trials and murder mysteries. At one year's party, an unwitting American becomes part of the game.

• BBC Drama Group
• Primetime Television Ltd.
• George Segal
• Trevor Howard
• Robert Morley
• Emlyn Williams
• Alan Webb
• Lesley Dunlop
• Brian Croucher
• Connie Booth