ENEMY ALIENS: Affair at Sun Valley

It was doubtful whether Joseph Sepp Froelich, sharp-eyed as he was, had ever noticed the quiet, unremarkable man who lived in one of the cottages, spent his time hanging around Sun Valley Lodge, watching the skaters during the indigo-shadowed afternoons, sitting in the café through the starlit evenings.

But that quiet man had noticed Mr. Froelich.

Froelich was one of the handsome Austrian and German experts whom W. Averell Harriman had brought to Idaho to teach Sun Valley colonists how to ski. Mr. Harriman had imported yodeling German waiters and musicians too,...