Mary Pearcey was deeply in love with her flame Frank Hogg. But Frank? He ended up marrying his steady girlfriend, Phoebe. Mary’s jealousy overcame her. Before long, Mary killed Frank’s wife and child. Stories of “Jealous Lovers” occupy pop culture, but what does this story archetype tell us about the real crimes that occur by women in love triangles? Join the true crime writer Tori Telfer and notable guests as they unpack the intrigue, psychology and history of the “Jealous Lover,” presented by CBS All Access.

Sarah Beth Hopton is an assistant professor at Appalachian State University, and author of 'Woman at the Devil's Door: The Untold True Story of the Hampstead Murderess."

Joni Johnston is a forensic psychologist and host of "Unmasking a Murderer." She works with the California Parole Board to evaluate offenders' mental health.