Campbell, for whom "Dynasty" was his first prominent role, went on to play the lead role in the 1991 retro sci-fi fantasy film "The Rocketeer" and then played a vampire hunter in 1992's "Bram Stoker's Dracula." His most prominent role came in 1999 playing Rick Sammler in the TV series "Once and Again," which he played until 2002. He also was a regular on the sci-fi series "The 4400" and had a recurring role on "The O.C." and the short-lived 2010 revival of "Melrose Place." His most recent roles came in the AMC drama "The Killing" and playing Abraham Lincoln in a National Geographic television adaptation of Bill O'Reilly and Martin Dugard's book "Killing Lincoln." He now stars in the the Syfy channel series "Helix" (pictured), which debuted in January 2014.