An unimaginable crime in the heart of wine country on Halloween night 2004.. For nearly a year the residents of the once idyllic Napa Valley live with the knowledge that a slasher is killing innocent young women, never knowing if he might strike again.

When a man in a wolf mask slays Doreen Erbert on Halloween night, police move quickly to find and arrest the monster responsible for this act of unparalleled rage.

This is what nightmares and urban legends are made of. Generations of kids and parents still shudder when this based on a true story tale is told around the campfire.

On Halloween night 1981, Sister Tadea Benz was brutally murdered. A mentally unstable suspect, a convent killing, a psychic and an infamous curse all make this one of our most bizarre episodes yet!

He did it! No, she did it! No, they did it! Can the jury sort out the evidence and figure out whodunnit? Which of three likely suspects will pay for the death of a loving father of two?

Was a father of three wrongly accused of murder and his fed-up wife simply took off, abandoning her family? Or was his mask of innocence hiding the true face of evil?

David Watson is accused of not one, not two, but three murders. But with no direct evidence, no eyewitnesses, no murder weapon, and in one case no concrete proof there was even a murder, will the jury be convinced by the prosecution or the defense?

Did local kids find sanctuary with the neighborhood "fun" Mom, or did they stumble into a house of horrors?

Lina Kaufman was a young, vibrant mother of two. No one could have predicted that she would be dead by the age of 33. Could an undiagnosed heart condition have killed Lina, or is her husband more sinister than anyone realized?

Steven Hatch took part in a horrifying assault on an Oklahoma minister and his family one terrible evening in 1979 that ended in the death of two members of the Douglass family. That Steven Hatch was one of the perpetrators, there is no doubt. But, what exactly was his part in the gruesome crime and did his trial become a case of vengeance rather than justice?