The distinguished industrialist, the fair girl and the aggressive young man - although Superintendent McDonald tried to avoid studying his fellow passengers, he simply couldn't help it. For him, it was difficult to adjust to being on holiday. He turned away deliberately. These people weren't his problem, he was on holiday - or so he thought. Set against the enchanting background of post war Vienna, with its beautiful palaces and gardens, its disenchanted residents and scars of war, E.C.R. Lorac constructs a characteristic detective story, sure to puzzle and excite. This exceedingly rare mystery, first published in 1956, makes its triumphant return for the first time since its original appearance.