Billy Ray Gallion

Survivors are jolted awake in the middle of the night when wild island beasts invade the beach encampment. Kate and Michael join the mysterious Locke on a hunt for food as a shocking secret about Locke is revealed. Meanwhile, some survivors are horrified by Jack's plan for the dead bodies still scattered among the wreckage, and Jack sees someone in the jungle who might not have been on the plane.

Joe White, McGarrett's mentor, asks the team to investigate the death of a Navy SEAL previously ruled a suicide. Meanwhile, Chin Ho is concerned when Kono starts fraternising with a group of dirty ex-cops.

Disturbing memories from Hurley’s past cause him to struggle with a task he’s assigned inside the hatch.

The team takes to the beautiful waters off Hawaii to investigate the murder of a deep-sea diver known for his valuable shipwreck finds.

When Hayley finds herself being implicated in a cyber-terror attack after doing an old friend a favour, Castle and Beckett rush to clear her name.

An investigation into the murder of a women's volleyball coach leads the team to discover more bad news about Kono. Meanwhile, Chin Ho reconnects with his former fiancée, Malia.