Episode 1
Billy Staton and his fiancé Leticia Castro vanish. The discovery of a burnt-out car and a shock confession reveal a deceit only a secret recording can untangle.
Episode 2
Robin Sowders is brutally beaten in his home and dies from his injuries. After his wife's surprising appearance at the police station, a wiretap reveals the truth.
Episode 3
Michelle Despinasse is shot in her own home and dies from her injuries. In her final moments she made a secret recording that reveals her killer's identity.
Episode 4
Dr Margo Prade is shot to death in the parking lot of her own medical practice in Akron, Ohio. Police discover her phone calls were being secretly recorded.
Episode 5
When Michael Humphreys and Sandra Walton are gunned down, detectives don't know who the intended victim was - until they find recordings of phone conversations.
Episode 6
When Sharon Garrison's family report her missing, there's evidence to suggest she left town. But a set of secret cassette tapes point to something far more sinister.