Hawaii Five-0: Kekoa (Warrior)

The detectives assume local thugs are to blame when the body of a businessman is found beaten and shot to death in the boot of a car. But then it turns out the victim was highly skilled in hand-to-hand combat, taking their investigation in a different direction. Meanwhile, McGarrett calls on old friend Mike Logan to run surveillance on his mother - but instead of keeping tabs on her from afar, the agent ends up taking Doris on a date. Treat Williams (Everwood) guest stars