The daughter of a successful mystery writer and a P.I. with pizzazz, Regan Reilly is attending her class reunion at St. Polycarp's England, when the long-dead body of her former roommate turns up under the bushes. It's a case Regan would love to solve, but a prior commitment puts her on a transatlantic cruise. She shouldn't have fretted. The clues to the crime are following her on the Queen Guinevere. Here, on a ship awash with secret lovers, a fortune...

Receiving a frantic call from a former neighbor from the Los Angeles neighborhood where she once worked as a private investigator, Regan traces the activities of the woman's ex-boyfriend, a con man with suspicious ties on both sides of the law.

Setting out for a last adventure with best friend Kit before her nuptials, Regan Reilly heads off to the Hawaiian islands, where the murder of a young woman involves Reilly in a multi-island investigation.

When their neighbor puts his apartment up for sale, Regan Reilly and her new husband Jack decide to buy it in order to enlarge their own loft, but the renovation process spawns its own set of problems and an unexpected case.