Andy McDermott

In order to undermine a powerful club enemy Samcro makes an unlikely partnership.

Five-0 investigates when a bomb squad is attacked and the culprit threatens to detonate additional hidden explosive devices unless arsonist Jason Sinclair is released from prison. Also, after Adam returns from the hospital, Kono realizes that they are being watched, and McGarrett prepares to take his relationship with Catharine to the next level. Former UFC Champion Randy Couture returns.

Team Scorpion goes undercover on a cruise ship to locate and disable deadly stolen rockets. Meanwhile, as Valentine's Day approaches, Toby and Happy help Ralph, who is in the throes of his first crush.

Rival gangs bring their war to Med. Will and Charles work with a teenage brain cancer patient who's refusing treatment.

A brutal storm rocks Chicago. Will encourages Dr. Grace Song to go against her own findings for the benefit of their patient.

CeCe arranges for a "house swap" with a French family.