The story of Josh and Chloe Bashford, who were stabbed and strangled to death by Chloe's stepfather in Brighton.

The story of Kristil Krug, who was beaten and stabbed to death by her husband, Dan. This episode also covers the case of Natasha Morais, who was tortured and strangled to death.

The story of Lauren DeWise, who was shot and killed by her abusive husband. This episode also covers the case of Cristina Ortiz-Lozano, who was stabbed to death.

The story of Angela Craig, who was poisoned to death by her husband putting cyanide in her protein shakes.

The story of what happened when digital forensics revealed that Colby Vinson's ex persuaded her stepfather to kill Colby.

The story of how CCTV and DNA exposed Bryan Kohberger for the murders of Ethan Chapin, Xana Kernodle, Maddie Mogen and Kaylee Goncalves.

In the US, CCTV and forensic evidence led to Jasmine Pace's killer, Jason Chen. In the UK, CCTV exposes Megan Newton's murderer, with blood on his hands.

The story of Collin Turner, who was tragically killed by his abusive wife while he was on the phone to 911.

In one case, a killer records himself tampering with the weapon, and in another, phone data exposes betrayal.

The case of Becky Bliefnick, who was killed by her husband. Elsewhere, autopsy results revealed that Keeley Bunker was murdered by a friend.