In what marks the most high-profile Lost reunion since the ABC phenom signed off last year, O’Quinn is joining the cast of CBS’ Hawaii Five-0 in a pivotal recurring role.

The gig not only brings the Emmy winner back to the Aloha State, but it reunites him with Lost castmate and Five-0 regular Daniel Dae Kim.

O’Quinn will play a Navy Seal Lt. Commander who trained Alex O’Loughlin’s McGarrett in Coronado, and served with his father in Vietnam. Described as strong, stubborn and a man you want in your corner when things go south, the character holds some of the answers to the mysteries surrounding the respective murders of McGarrett’s mother and father.