McCall is hired by an online group of true-crime enthusiasts to find the anonymous stalker of an unsuspecting NYC woman when the criminal claims he will murder her in eight hours.

Bishop comes to McCall, Harry and Mel for help when a terrorist from his past uncovers the identity of his adult son, a young man Bishop has kept secret for decades to safeguard him from his intelligence work. Also, Aunt Vi becomes nostalgic about a past romantic relationship when she receives a surprise visitor.