Harry and Suri investigate the case of a prototype driverless car that drowned the owner's wife. The wife was threatening divorce and was going to take her money with her, but it soon becomes clear that someone else is responsible. Meanwhile, Eve warns Harry about Isabella, and Steve requests a transfer.

A hitman kills the nine passengers and crew on a jet, and Harry discovers that the man is connected to the death of Isabella's children. Meanwhile, Daisy suggests that Harry needs a sidekick.