Detective Kevin Hiatt on The Shield, Mick St. John on Moonlight, Dr. Andy Yablonski on Three Rivers, Stan in The Back-up Plan, Lieutenant Commander Steve McGarrett on Hawaii Five-0
Alex O'Loughlin (born 24 August 1976) is an Australian actor, writer, director, and producer, who plays Lieutenant Commander Steve McGarrett on CBS' remake of the TV series Hawaii Five-0. He had starring roles in the films Oyster Farmer (2004) and The Back-up Plan (2010), as well as on such television series as Moonlight (2008) and Three Rivers (2009).
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