A P.

While out walking Sarge, her sister's bichon frise, Tricia is led by the agitated dog to a man lying in a gazebo. She's startled when she recognizes Pete Renquist, the president of the Stoneham Historical Society, who appears to be suffering from cardiac arrest. When Pete later dies in the hospital, the discovery of a suspicious bruise and a puncture mark on his arm suggests he may have been murdered.

After Tova Sullivan’s husband died, she began working the night shift at the Sowell Bay Aquarium, mopping floors and tidying up. Keeping busy has always helped her cope, which she’s been doing since her eighteen-year-old son, Erik, mysteriously vanished on a boat in Puget Sound over thirty years ago. Tova becomes acquainted with curmudgeonly Marcellus, a giant Pacific octopus living at the aquarium. Marcellus knows more than anyone can imagine but wouldn’t dream of lifting one of his eight arms for his human captors—until he forms a remarkable friendship with Tova.