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.

When a boat skipper goes missing after a tragic ferry accident, Dean becomes obsessed with finding him — dead or alive. Heidi vows to uncover the identity of a mysterious young "Jane Doe" who died suddenly after a ferry disaster. Meanwhile, Dean and Chase face some home truths when their father introduces his sexy young girlfriend.

Heidi's life is thrown into chaos when she makes a chilling discovery at a fun park rescue. Jordan helps save the life of a serial rapist — but have the police got the wrong man? Dean rescues an old flame, sparking a hot new romance.

Dean and Lara pursue a gang of incompetent ATM ram-raiders, with explosive results. Vince and the team battle to rescue Dean and Chase's father from a building site accident. Michelle fears the worst when Head Office launches an investigation into the Unit.

A freak accident causes havoc at an illegal rave party. Chase ignores Dean's warnings about his obsessive new friend, and Lara suspects Hamish is having an affair.