Monday

On a rainy night in Edmonton, Alberta police are called to a trucking yard where the body of a 6-year-old girl laying face down in the mud rattles the most seasoned homicide detectives. Few clues are left at the crime scene, and a mysterious marking left in the soft ground is the only lead that police have to follow. The city residents are overcome with fear for their children, which prompt an immense response of tips from across the province. However, despite the thousands of tips and leads that are processed, the investigation enters its 10th year, and the police are no closer to finding the killer. Finally, an officer unexpectedly finds the one clue that ties a man by the name of Clifford Sleigh to the crime committed almost a decade earlier. Revolutionary DNA analysis conclusively determines that he is the Boogeyman that police have been searching for.

A young woman is found murdered in her Portland, Oregon, apartment on Christmas Day and investigators soon learn the terrifying truth about her vicious killer.