Investigation Discovery Wednesday

John searches for Erik Arceneaux, a prime suspect in the murder of a devoted single mother, whose family needs justice

John hunts for Brian Ontiveros, who police believe killed his ex-girlfriend in a fit of jealousy. Plus, Callahan Walsh investigates a woman's mysterious death

A Florida man's wife goes missing, but a grainy videotape may reveal her grisly fate. The killer's jailhouse phone calls threaten to widen the circle of fatalities

A man's first wife died in an apparent burglary and years later, his second wife is killed. Police must determine if it's just a terrible coincidence

The mysterious circumstances surrounding the death of the actress in November 1981

A case in which a young family vanished from its California dream home. Authorities suspected they had fled the country, but an unlikely source revealed the truth