Almost every year, we believe that nothing can top the abject horror of the last 12 months when it comes to true crime stories, homicides, execution-style murders, or serial killers that are still on the prowl, leaving behind a trail of blood, tears, and sorrow. Then, of course, the New Year begins.

Christopher Wilder was about as bad as they get. A predator and serial killer, he first came to the attention of police in Sydney when, as a teenager in 1963, he was charged with rape. A good behaviour bond was not a deterrent, and over the years his crimes escalated. After moving to the USA in his early 20s, Wilder continued to perfect his vile and deadly trade. He was a chameleon with a modus operandi refined over the decades, luring young teenage girls with the promise of a career as a photographic model.

If you thought you knew the story of The Teacher's Pet, get ready to be shocked. Hedley Thomas takes you behind the scenes with a blow-by-blow account of one of the most intriguing and enduring murder mysteries of our time - the crime, the podcast investigation, the sexual exploitation of teenage students, the courtroom drama - and how justice was finally delivered.

You are about to hear several more stories in this volume that are shocking and disturbing, but they’re also true. These things really do happen in the world. The stories paint a picture of human depravity that many would prefer to remain hidden. However, it is only by dragging evil into the light that we can begin to understand its terrible allure.

For his victims, for their families and for the investigators tasked with finding him, the senselessness and brutality of the Golden State Killer's acts were matched only by the powerlessness they felt at failing to uncover his identity. Then, on April 24, 2018, authorities arrested 72-year-old Joseph James DeAngelo at his home in Citrus Heights, Calif., based on DNA evidence linked to the crimes. Amazingly, it seemed, evil finally had a name. Please note: This work contains descriptions of violent crime and sexual assault and may not be suitable for all listeners.