In June 2016, Dawn Rhodes was killed at the family home in Redhill, Surrey. Her husband, carpenter Robert Rhodes, who cut Dawn’s throat and claimed self-defence, told the police that she had attacked him. In 2017, a jury at the Old Bailey believed him. He walked free. But in 2021, one of the couple's children disclosed the truth to a therapist…

In the summer of 1976, one of the hottest on record, a young man's body was found in a ditch on a lonely Leicestershire road. At first, it looked like a hit-and-run. It wasn’t. 25-year-old plumber Gary Toms had been in a relationship with a married woman named Marlene Evans. Her estranged husband, Harold Evans, had spent months watching the relationship develop, attending court for breach of the peace, attempting suicide, and quietly acquiring a pistol. Was this a man pushed beyond breaking point, or a calculated, premeditated murder dressed up as provocation?…