Explores lives undone by unthinkable betrayals and the courage it takes to survive scandalous confessions, secret lives, terrifying acts of violence, financial ruin and more, showing that when loyalty turns to lies, the truth does more than break hearts - it changes everything.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific killers, resulting in 500 hours of secret tapes.