When a serial rock-thrower causes a fatal car crash, the team is determined to bring him to justice. Then, Chase risks his career to grant a mother's dying wish, while a potential recruit to the Rescue team has a dangerous obsession with Lara.

Rescue faces its most extreme emergency yet when an oil tanker is involved in a massive accident. Dean realises Lara's life is in danger from a violent stalker. Can he rescue her in time? It's Lara's wedding day, but does she have cold feet?