Craig Henningsen

Artie tests positive for an STD and must tell his sexual partners. Blaine's weight gain causes issues with Kurt.

As a dangerous hurricane hits Oahu, Five-0 is tasked with protecting El Diablo, a captured serial killer, who is being hunted by an assassin. Tani's civilian safety check during the storm turns deadly. Rachel and Charlie evacuate to Danny's house.

Magnum and Higgins are sent on a deadly mission inside a high security correctional centre when a ruthless criminal abducts Katsumoto and his ex-wife; T.C. rushes to help Rick when Suzy experiences serious pregnancy complications.

As Will begins his first day as Proxy Snyder's inside man, Katie makes a secret commitment. Carlos suffers the consequences of Will's actions.