From the open porthole on her sailboat, Bryn Baczek overhears a heated argument on a nearby boat followed by a loud splash . . .then silence. Bryn lives on a sailboat in a small marina with her cantankerous cat, Macavity, and a series of short-lived goldfish. While seeking evidence to prove a neighbor innocent of murder, she ends up being threatened by the victim’s abusive boyfriend, betrayed by a close friend, and almost bored to death by an uncooperative accountant. Although Bryn shares what she learns with a charming detective whose manicured mustache she finds off-putting, she is one step ahead of the police in identifying the murderer . . . a step that puts her in a dangerous face-to-face confrontation.