Libby Squire & Heather Frank, Scott Sessions

E1

A young UK student is raped and murdered. Surveillance footage traps a serial sex offender. A jazz musician and his new girlfriend are murdered a week apart by her jealous ex.

Summer Tatum & Andreen McDonald

E2

Pregnant Summer Tatum was shot twice in the head by her husband after she discovered his online affair. Andreen McDonald, a businesswoman, was killed by her husband, Andre, with a hammer.

Patricia Birmingham & Marta Chmielecka

E3

Two cases of domestic abuse: Patricia Birmingham in the US and Marta Chmielecka in the UK, both killed by their partners, reveal the deadly consequences of toxic relationships.

Whitney Gray & Kira Steger

E4

Kira Steger's murder by her husband and Whitney Gray's fatal road rage shooting reveal the devastating toll of violence both in relationships and on the open road.