British Intelligence agent Tommy Hambledon had the mistaken notion when he arrived at Innsbruck that he had left behind all connections with Herr Bastien, who had been shot in the railway compartment they shared on the Anglo-Swiss Express. But when he was commanded by a belligerent Austrian taxi driver to disrobe, and then forced at gunpoint to hike barefoot over the Alps, Hambledon ruefully decided that his vacation was over.