An aging hippy is going through bad times. His wife has left him for a lesbian lover, taking their kids. His cancer, once in remission, has returned. When he's found dead in his home with a gut full of antifreeze - "the sweet killer" - it's sad, but not shocking that he looked for an escape in suicide.

Stuck at home and bored, a retiree takes a job at a 24-hour convenience store. On her third night at work a customer finds her on the floor behind the register, face down in a pool of blood. Detectives determine that her last customer was also her killer. Only two witnesses saw that customer.

A Toronto real estate broker fails to return home at the end of the day. Her family can't find her. But the police do - dead in a utility closet in her downtown office. The DNA found on her body is tested against 150 different men. No match. The case runs cold. And then an office employee suggests police investigate a former maintenance worker who has slipped under the detective's radar.