Police must determine if a missing woman is a stalker or victim of murder.

A young mother is found dead in her home, and orange juice is the key.

A high school student is found raped and murdered in Las Vegas.

Police work to uncover who killed a 19-year-old single mom.

Investigators find a woman's dark secret that may have gotten her killed.

A man is killed and as police look at his life, they find a deadly picture.

The diary of a teen girl that was found dead reveals a shocking assault.

A missing student's diaries lead to an alarming homicide investigation.

A diary helps detectives uncover what really happened to two teen brothers.

Police delve into the world of online deception and internet homicide.

A detective hopes interviews with a young boy will help him find a killer.

Evidence points to a string of serial killings in Pickering, Ontario.

Detective Postiglione spots a killer's window of opportunity.

An unlikely clue helps Detective Postiglione solve a double murder.

Detective Postiglione recalls a detail in the murder of a young mother.

A woman goes missing after being dropped off at a bar by a friend.