FBI profiler Alicia Brown is forced to join McGarrett in the hunt for the chess-piece killer when she finds a body in her bed. Meanwhile, Kono reconnects with a former surfing competitor who is now a disabled and homeless war veteran.moreless
In the Season 4 finale, Ray, hoping his deal with Hector will be his family's salvation, learns that Sonia has turned over incriminating evidence to FBI agent Frank Barnes. Ray is forced to wear a wire, but decides to play the Russian mob off the FBI, but things take a dangerous turn. Meanwhile, Mickey's attempt to cash in on the big fight leads him to a discovery that could help Ray against both sides.moreless
Ray helps Hector handle a person from his past who threatens to reveal a secret that could ruin Hector's boxing career. Meanwhile, Abby offers Bunchy a lesson in marital compromise; and Det. Muncie uses incriminating evidence against the Donovans to force Ray's hand, which draws him further into the path of the Russian mob.moreless
Season 1 ends with Dice's place at the top of his crew being threatened when his old buddy Bobby the Mooch returns to town with newly acquired wealth. Dice's jealous behavior causes him to lose his best friend, so he fights to win Milkshake back.moreless
When Ray and Miles help Taylor with her Halloween party with friendly spirit tricks, they ignore Louie's desire to scare people. He enlists a evil ghost who takes the scares too far.