Smiley Face Killers: The Hunt for Justice

A group of retired detectives examine the 2017 drowning death of a graduate student in Pittsburgh, looking into whether there's a connection to the Smiley Face Killer theory.

A group of retired detectives investigate the death of a college basketball player. The team travel to Wisconsin, where they develop their theory on the Smiley Face Killer.

Detectives head to Boston to find out more about the death of a navy veteran and begin by talking to his girlfriend, the last person to speak to him.

Several detectives look into the death of a college honours student who disappears in Chicago and is then found dead 77 days later.

A group of retired police investigate the murder of a young Philadelphia man, whose body is discovered 14 days after the initial search of the area.

The body of a man is found in a remote Michigan lake, 21 days after he is reported missing. Detectives suspect the Smiley Face Killers, due to the minimal levels of decomposition on the corpse.