Five days into the first UK lockdown, Anthony Williams strangled his wife Ruth Williams to death. He pleaded guilty to manslaughter by reason of diminished responsibility. Joe explains what diminished responsibility entails, and Sandra fantasises about watching Joe's Venus flytrap eat.

Ian Stewart was found guilty of murdering his fiancée, successful author Helen Bailey. Joe explains why hair is a useful tool in forensic toxicology, and Sandra talks about that one time she thought she had a hole in her mouth.

Nevill and June Bamber were murdered in their farmhouse along with their daughter, Sheila Caffell and her twin sons, Daniel and Nicholas. The police wrote it off as a murder-suicide, but the evidence pointed to the person who had called it in - Jeremy Bamber. Joe shivers through the retelling of the abhorrent police work, and Sandra talks about the mutinator.

Glyn Razzell was found guilty of the murder of his ex wife Linda Razzell, but her body has never been found. Joe explains why the blood spatter evidence couldn't have been planted, and Sandra has opinions about facial hair.

Courtney Valentine-Brown was murdered by Ian Slater and Alex Stephens, aided by Kelly King and Stuart Pearson. Joe talks about how cellphone data was used to track the perpetrators movements, and Sandra channels all of her impressions through Bane.

Patricia Stallings was wrongfully convicted of poisoning her son Ryan with antifreeze. He was later proven to have died of a rare hereditary disease. Joe explains Gas Chromatography, and Sandra talks about her acid reflux.

The murder of Krystal Beslanowitch was solved with the help of a vacuum. Joe explains how that worked, and Sandra gets a cleaning boner (not because of Sheriff Todd Bonner).

The Stratton brothers murdered Thomas and Ann Farrow in 1905, and were some of the first people to be convicted with the help of fingerprint evidence. Joe talks about his lack of loops and arches, and Sandra came to this country to steal your punchlines.

The Frankston serial killer murdered Elizabeth Stevens, Deborah Fream and Natalie Russell in a series of random attacks. Joe reenacts the police interrogation and faces his foot phobia head on, and Sandra explains why she doesn't eat "big shrimp".

The Dyatlov Pass mystery has been solved with science, and Joe tries to explain how. Sandra delves into the juicy conspiracy theories, and dreams about riding a moose into battle.