In mid-1943, and up to his elbows in war work, Henry Gamadge is longing for a quiet weekend. But when a half-forgotten classmate requests assistance, Gamadge is unable to refuse the tug of an old school tie. The problem, says Sylvanus, concerns his Aunt Florence'a giddy socialite terrified of Nazi bombs. Florence has moved her extensive household of hangers-on to the family mansion in upstate New York. But menace seems to have followed them, in the form of threatening messages inserted into the manuscript of Florence's painfully bad novel in progress. Several members of the household are convinced the messages are emanating from Another World, but the politely pragmatic Gamadge suspects a culprit rather closer to home.