When an 11-year old girl is seen being dragged into a car kicking and screaming, the police issue an Amber alert. As the minutes and hours pass by, they know their chances of rescuing the girl diminishes. As Tony Hill reviews the evidence however, he becomes less and less convinced that this is an abduction by a stranger and believes that the girl must have known her attacker. The missing girl's mother is overwrought and her stepfather has a conviction for assault. A sudden twist however changes the entire nature of the investigation leading Tony and DI Alex Fielding ...

When a young prostitute is found dead, clinical psychologist Dr. Tony Hill sees an immediate parallel with the crimes committed by an incarcerated serial killer, Derek Tyler. There can be no doubt that Tyler is innocent of the most recent crime but the similarities - the women were all blond, young, bound to the bed and cut until they bled to death - cannot be ignored. Tyler was diagnosed as a paranoid schizophrenic but Tony soon realizes that he wasn't hearing voices telling him to commit the murders but rather was taking instructions from someone. The case becomes ..

Another serial killer is at work. This one kills homeless men by stabbing them through the heart but a bizarre ritual is also at work because the bodies are bathed and wrapped up in paper before they are left around the town's business area. Alex is called away and her place taken by the young Oxbridge graduate Hall,of whom Tony is initially suspicious but he turns out to have a psychology degree and to be a big fan of Tony's work. A more sinister fan,clearly Bryant,is leaving 'presents' on Tony's door-step.

Tony Hill assists the police in their investigation of a bizarre series of murders. In each case the victims - a property developer, a bishop, a judge - were brutally killed and the killers then immediately committed suicide. Tony thinks there is a connection to the Freemasons, but then realizes that they are dealing with a religious sect that glorifies suicide. He knows from the profile that the head of the sect will be a white male and from the religious symbolism that he will have six disciples, but who are they and how will they find this needle in a haystack?

Dr Hill is convinced the attacks bear the hallmarks of a different killer - until a bizarre link suggests more deaths will follow.

As Dr. Hill closes in on the homophobic psychopath, he almost falls victim to him, or her. Who can tell?

Tony Hill assists the police in investigating a series of murders. His profile suggests that the man committing these crimes may come forward as a potential witness and the police soon focus in on Bernard Kelly. In his mid-30's and still living at home with a domineering mother, he seems to fit his profile, but Tony has nagging doubts as he finds significant differences in style between some of the attacks. During this time Tony has a house guest, his old friend from university Jonathan Good who is also a psychologist. As time goes by however, he begins to behave ...

Dr. Hill pieces together the convoluted history of a formerly retired serial killer and the whereabouts of the latest victim the killer abducted.

The remains of corpses are discovered whilst new foundations are being dug at the Norton Hotel, a building which stands on the site of an abbey, a fact which leads to a suspicion that these were religious killings. Then the hotel is burnt down and,as the first of a series of murders takes place, Carol asks for Tony's involvement. The strange thing is that these murders are identical to those committed some five hundred years earlier.

Tony Hill and DI Alex Fielding find themselves investigating the ritualistic murder and mutilation of children. It becomes apparent to Tony that the perpetrators are casting voodoo-like spells on a variety of victims. The investigation reveals several possible suspects including a so-called preacher, Dr. Kingston and a brute of building contractor whose building site is shut down when a young boy's heart is found buried there. The power of suggestion begins to affect several of the team, including DC Paula McIntyre who finds herself hospitalized from a strange ...

The suspicious death of a hospital patient leads to post mortems being conducted on other patients who supposedly died of natural causes but now appear to have been murdered. Tony suspects the killer may be a person who believes they are releasing the victims from pain by their actions, guided by religious motives. However Islamic terrorists are also suspected, leading to the involvement of MI5. Carol is under scrutiny and needs Tony's help to keep her job.

Tony Hill works with the police to solve the murder of the Johnsons, who were butchered in their flat. When a second victim, Sarah Maynard, is similarly killed they realize they have a serial killer on their hands. William MacAdam, a one-time killer is now one of Tony's students and these new murders are very similar to the ones he committed 30 years ago. He was released from prison as he was considered rehabilitated and has lost the use of both hands due to severe arthritis. Tony is convinced that MacAdam is their man, but he is quite shrewd and it will be very ...

Newly promoted to Detective Chief Inspector, Carol investigates a murder which seems to bear the hallmark of gang boss Gavin Cochran. However Cochran is behind bars for murder and could not have done it. Carol asks Tony to work out any links between the two slayings, leading to the arrest of Cochran's brother George. But there is a fight during which George ends up in a coma. Gavin is released from prison for a compassionate visit, during which another killing takes place, allowing Tony to test his theory and trap the murderer.

Tony's patient, the child killer Maggie, is on the verge of revealing where she buried her victims, but Tony and the police are distracted by a serial murder case involving the roommate of one of his students.

Several bodies are discovered buried in wasteland. They range from all walks of life and ages but each body is incomplete and their hands have been tied. This leads Tony to suspect that a sadomasochism ring may be involved and leads him to the dominatrix Elektra, who tells him about her clientèle. Sometimes the mildest people outwardly have the darkest secrets.

Dr. Hill strives to deduce the connection between the bodies of two teenage girls dumped in a lake and the motives for their murder.