The Case of the Seven Sneezes

Fergus O'Breen turns down a job to investigate a 25-year old murder, but finds himself part of a house party attended by the man who tried to hire him. The party is to celebrate the silver wedding anniversary of a couple whose marriage was the setting for the death of one of the original wedding party. With the remaining wedding party and other relatives gathered on an island, the deaths of cats that led up to the original killing seems to be starting up again. But the man who hired him has changed his mind and O'Breen may be working now for free, or at least to save his own life. When the killer manages to maroon everyone on the island, it's up to Fergus to protect everyone and unravel the clues, including the fact that he sneezes when around a cat -- dead or alive.