Hawaii Five-0 is beefing up Chin Ho's (Daniel Dae Kim) presence in Season 4. One upcoming episode will flash back to his first meeting with his late wife, the circumstances surrounding the loss of his badge and his time under the mentorship of McGarrett's father, John. But first, the season kicks off with a pair of episodes that welcome two of Kim's former Lost costars.
Henry Ian Cusick (the time-jumping Desmond) guest stars in the Sept. 27 premiere as the villainous Ernesto, who holds the team hostage. "He's tied in to some baddies we introduced last season," says exec producer Peter Lenkov.