When a garden club invades the brownstone to admire Wolfe's orchids, a murderer is there as well. A young woman who asks Archie for help to is found dead in Wolfe's office and Wolfe must solve the case to get his office unsealed by the police.

Nero Wolfe is stunned when Archie Goodwin reveals evidence of his impending engagement. However, Archie is no less shocked when accompanying his so-called fiancée to a Christmas party by the murder of their host.