When a man vanishes under mysterious circumstances, investigator Bill Clark leads the charge; following the trail of clues, police delve deep into the world of online deception and internet homicide.

A young couple is bludgeoned to death in their home, and the only witness is the woman's 3-year-old son; with nothing else to go on, Detective Don Forgan begins a series of interviews with the toddler hoping it leads to a break in the case.

In Pickering, Ontario, a young woman vanishes, and the evidence points to one man and a string of serial killings; when red tape threatens to get in the way, Detective Herb Curwain is willing to do whatever it takes.

Decorated Detective Debbie Harris is put to the ultimate test after she's called upon to investigate a six-alarm fire in which all of the evidence has gone up in flames.

Detective Rod Piukkala faces one of the most haunting cases of his career when a brutal killer engages in a cat-and-mouse game with police, taunting authorities and threatening to kill again.

When a terrified sex worker asks Detective Penny Hart for help, she knows it must be serious. Things quickly intensify when the same frightened informant goes missing and is feared to be dead.

A man is murdered less than one month after arriving from the Philippines to join his resettled wife in Calgary; Detective Thomas Barrow always prided himself on being able to read people, but is haunted when his instincts fail.

After family members are killed at a campsite, the case takes Detective Mike Eastham across the country and back again.