The horrific and disturbing nature of these stories often makes you question everything you thought or believed about humanity. Yet they are engaging and fascinating at the same time. We all had evil thoughts throughout our lives. What is it that makes us different from those who actually act upon it? Is it the act alone? These are questions that many ask themselves, and these stories will help dig into the elements and psychology behind some of the most terrifying killers in history.

In the very depths of the human soul there is a darkness. It is an entity which most of us may never get to know; for others, however, this darkness grows for years until it takes hold of them and permeates every inch of their body. This darkness is evil incarnate, and it is in the hearts and minds of some of the most dangerous and despicable human beings to have walked this same earth we live in today. In the following volumes, you shall discover the stories of six murderers so tainted by darkness that their horrific accounts still bring fear to men and women of our present day.

On 7 August 1985, Nevill and June Bamber, their daughter, Sheila, and her two young sons, Nicholas and Daniel, were discovered shot to death at White House Farm in Essex. The murder weapon was found on Sheila's body; a Bible lay at her side. All the windows and doors of the farmhouse were secure, and the Bambers' son, 24-year-old Jeremy, had alerted police after apparently receiving a phone call from his father, who told him Sheila had 'gone berserk' with the gun. It seemed a straightforward case of murder-suicide, but a dramatic turn of events was to disprove the police's theory. 

Christopher Berry-Dee is the man who talks to serial killers. A world-renowned investigative criminologist, he has gained the trust of murderers across the world, entered their high security prisons, and discussed in detail their shocking crimes. The killers' pursuit of horror and violence is described through the unique audiotape and videotape interviews which Berry-Dee conducted, deep inside the bowels of some of the world's toughest prisons.

There is little more terrifying than those who hunt, stalk, and snatch their prey under the cloak of darkness. These hunters search not for animals, but for the touch, taste, and empowerment of human flesh. They are cannibals, vampires, and monsters, and they walk among us. These serial killers are not mythical beasts with horns and shaggy hair. They are people living among society, going about their day-to-day activities until nightfall. They are the Dennis Rader's, the fathers, husbands, church-going members of the community.

Mark Williams-Thomas is a former police detective and multi-award-winning investigative journalist. He has been at the centre of some of the most high-profile investigations of recent years involving killers and paedophiles. In this gripping and unflinching audiobook, Mark reveals how he has pieced together these complex cases. Through tireless research and perseverance, Mark takes us on a journey of discovery gathering and pursuing new evidence, earning the trust of silent witnesses and sharing the personal toll this extraordinary job takes on him.

Sunday Times best-selling author Christopher Berry-Dee is back with a companion volume that delves even deeper into the savage world of psychopaths and their hideous crimes. This time, however, he combines sections on killers whom he has known, interviewed or corresponded with, with studies of psychopathic serial killers from the past, including Peter Kürten, the 'Düsseldorf Monster'; John Christie, responsible for the killings at 10 Rillington Place; and Neville Heath, a ladykiller in every sense of the word.

This incredible story shows how John Douglas tracked and participated in the hunt for one of the most notorious serial killers in U.S. history. For 31 years a man who called himself BTK (Bind, Torture, Kill) terrorized the city of Wichita, Kansas, sexually assaulting and strangling a series of women, taunting the police with frequent communications, and bragging about his crimes to local newspapers and TV stations.

The terrifying story of the most monstrous serial killers through history. Serial killers are the most notorious and disturbing of all criminals, representing the very darkest side of humanity. Yet they endlessly fascinate and continue to capture the public's attention with their strange charisma and deadly deeds. From Jack the Ripper to Ted Bundy and the Moors Murderers Ian Brady and Myra Hindley, these killers transfix us with their ability to commit utterly savage acts of cruelty and depravity.

As oil-boom money poured into Anchorage, Alaska the city quickly became a prime destination for the seedier elements of society: prostitutes, pimps, con men, and criminals of all breeds looking to cash in. However, something even worse lurked in their midst. To all who knew him, Robert Hansen was a typical hardworking businessman, husband, and father. But hidden beneath the veneer of mild respectability was a monster whose depraved appetites could not be sated. From 1971 to 1983, Hansen was a human predator, stalking women on the edges of Anchorage society.

At any time in our history, you will find significant and seemingly indisputable events occurring, the kind that can change the course of our lives - the assassination of President John F. Kennedy, the terrorist attacks of 9/11. Yet for every one of them, somebody, somewhere will loudly dispute the "official" account, doubting that the truth has been told. In today's environment, with trust in authorities at an all-time low, conspiracy theories have found a new currency, and websites and social networking ensure they receive a wider and more rapid spread than ever before.

Ann Rule was working on the biggest story of her career, tracking the trail of victims left by a brutal serial killer. Little did this future best-selling author know that the savage slayer she was hunting was the young man she counted among her closest friends. Everyone's picture of a natural winner, Ted Bundy was a bright, charming, and handsome man with a promising future as an attorney. But on January 24, 1989 Bundy was executed for the murders of three young women - and had confessed to taking the lives of at least thirty-five more women from coast to coast.

Broadmoor. Few place names in the world have such chilling resonance. For over 150 years, it has contained the UK's most violent, dangerous and psychopathic. Since opening as an asylum for the criminally insane in 1863 it has housed the perpetrators of many of the most shocking crimes in history; including Jack the Ripper suspect James Kelly, serial killers Peter Sutcliffe, John Straffen and Kenneth Erskine, armed robber Charles Bronson, gangster Ronnie Kray, and cannibal Peter Bryan. 

From Jack the Ripper to the modern-day drug cartels, discover the most notorious crimes and criminals in history. With a foreword written and narrated by best-selling crime author Peter James, The Crime Book explores over 100 crimes and examines the science, psychology and sociology of criminal behaviour. Hear the gory details of each crime and how they were solved, with renowned quotes and detailed criminal profiles letting you delve into the criminal mind. 

 The Search for the Green River Killer is the ultimate authoritative account of the Pacific Northwest killing spree that held a nation spellbound - and continues to horrify and fascinate, spawning dramatizations and documentaries of a demented killer who seemed unstoppable for decades.