On Valentine’s Day 1985, Cassandra Rundle and her two children were found slaughtered in their Colorado Springs home. For weeks, police tracked down men who responded to a personal ad she left in the back pages of a newspaper, looking for love. 35 years later, her killer remains free. This is Colorado Cold Case Season 4: The Lonely Hearts Murders.

Reported and hosted by Lance Benzel and Olivia Prentzel Produced by Katie Klann