Cardinal is a Canadian crime drama television series, which was first broadcast on January 25, 2017, on CTV and Super Écran. The series adapts the novels of crime writer Giles Blunt, focusing on police detective John Cardinal and his partner Lise Delorme, who investigate crimes in the fictional city of Algonquin Bay.

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. Then he became known for playing Rick Sammler on Once and Again, Det. Joey Indelli on Crime Story, Jordan Collier on The 4400, and Dr. Jon Fielding on the Tales of the City miniseries. His most notable films include The Rocketeer, Bram Stoker's Dracula and Enough. He portrayed Darren Richmond on the AMC television series The Killing, Dr. Alan Farragut in the SYFY series Helix and Det. John Cardinal on CTV's Cardinal.