The development of a major resort complex at the southern end of Breakfast Island is causing a ruckus. Local residents, summer people and mainland fisherman are all hopping mad that the peace of their island retreat is being shattered. Then a cabin cruiser explodes in the marina causing general alarm. But when a series of deadly accidents follows on the heels of the mysterious explosion, Qwilleran begins to wonder if sabotage is involved.

The colorful Casablance apartment building is in danger of demolition--but not if Jim Qwilleran can help it. He's determined to restore the building to its original grandeur. So he moves in with Koko and Yum Yum--and discovers that the Casablanca is steeped in history...and mystery. In Qwill's very apartment, a glamorous art dealer met an untimely fate, and the veteran journalist and his crime-solving cats are about to reach new heights in detection...