Adapted from author Giles Blunt's award-winning "John Cardinal Mysteries" series, Cardinal is a six-episode dramatic thriller that follows Detective John Cardinal on a chilling hunt for a brutal killer in a small Northern Ontario town.

Demoted for a hunch about a case that he wouldn't let go, Cardinal is brought back to the Homicide Unit when the body of missing 13-year-old Katie Pine is discovered, proving his instincts correct. Back on the case, his search for her murderer soon becomes an all-consuming race to stay ahead of a serial killer.

Meanwhile, Cardinal must manage his own precarious family issues and secrets, and keep a watchful eye on his new partner, Detective Lise Delorme, who he believes may have her own secret agenda.