William Oliver Campbell is an American film and television actor. He first gained recognition for his recurring role as Luke Fuller in the TV series Dynasty. Since then, he became known for playing Rick Sammler in Once and Again, Det. Joey Indelli in Crime Story, Jordan Collier in The 4400, and Dr. Jon Fielding in the Tales of the City miniseries. His most notable films include The Rocketeer, Bram Stoker's Dracula and Enough. He portrayed Darren Richmond in the AMC television series The Killing, Dr. Alan Farragut in the Syfy series Helix, and Det. John Cardinal in CTV's Cardinal.