Imagine knowing who a serial killer is for years but not having enough evidence to prove it. This is what happened to police in Sydney, Australia. During the 1980s, Leonard Warwick was angry when he lost custody of his daughter after his divorce, so he targeted employees of the family court system. And the only way to stop the violence was for his ex-wife to surrender custody.

Today, Vanessa joins Carter Roy for a special crossover episode with Cold Cases.

Learn more about your ad choices. Visit podcastchoices.com/adchoices