Chad Rook

On Murtaugh’s first day on the job as interim captain, the wife of a popular businessman is abducted, and the squad finds a connection in the case to Riggs’s father, Nathan Riggs (recurring guest star REX LINN). Meanwhile, Riggs is left to grapple with his family and work.

While on the North Star, Ben discovers a strange device in the water that could lead to Chris.

When the military facility is on high alert, Chris escapes along with a traumatized "nurse."

Old friends return to Bristol Cove. Ben investigates some suspicious overfishing. Decker ramps up his efforts to find his escaped mermaid and shows the true extent of his influence.

Rogers strikes a deal with Eloise despite Tilly's fair warning, while Ivy struggles to find herself after Victoria's death. Meanwhile, Hook confronts Captain Ahab over a legendary magical talisman which can free Alice.