Terry O’Quinn is best known for his portrayal of John Locke on the long-running hit ABC series “Lost.”

After earning his stripes in theatrical productions in the late ’70s and early ’80s, O’Quinn burst onto the scene for film fans as Jerry Blake, the seemingly gentle but actually maniacal master of the house, in “The Stepfather.” His other film credits include “Young Guns,” “The Rocketeer,” “Places in the Heart,” “The Cutting Edge,” “Primal Fear,” “The Forgotten One” and “Black Widow.”

On television, O’Quinn was a regular on Chris Carter’s series “Millennium” and “Harsh Realm,” and appeared in recurring roles on “The West Wing,” “Alias” and “JAG.”

In 2007 O’Quinn won an Emmy Award for his role on “Lost.”

He and his wife, Lori, have two sons, Oliver and Hunter.