1 :01x01 - More Than Meets the Eye

Robert Bridge is a psychology lecturer and specialist in the study of psychic mediums. Though deeply sceptical of psychics and their abilities, Robert takes his students to an 'evening of clairvoyance', where he meets Alison Mundy.

Reluctant and troubled, she is a far cry from the fraudulent psychics that Robert is used to.

Ever since Alison was a child she has seen spirits. But after a near death experience, these spirits are beginning to take over her life. In an attempt to start afresh Alison has moved to Bristol, but it hasn't worked. As she lies awake at night, she can't escape the voices that cry out to her.

When Alison's readings provoke an adverse reaction in one of Robert's students he begins to study her with the intention of writing a book. But Robert is completely thrown when Alison claims to the see the spirit of his own dead son Josh who was killed in a car accident two years earlier.

2 :01x02 - Lower than Bones

Eight-year-old Carly Tufnell has gone missing and the police have no leads whatsoever. Desperate to know whether their daughter is alive or dead, her distraught parents make an emotional televised appeal

They hear nothing.

While shopping the next day, Alison sees Carly. Or rather Carly's ghost standing in front of her, dripping wet and shivering. Shocked by the apparition, Alison decides that she has to let Carly's parents know that their daughter is dead.

But Robert knows how it feels to lose a child and tries to talk her out of it.

Alison visits the police to tell them about Carly's death but is met with deep suspicion by Detective Inspector Felix George, especially after Robert turns up and warns him against being taken in by her.

But when information from Alison leads to the discovery of Carly's drowned body, D.I. George is forced to acknowledge that perhaps it is only Carly's spirit who can provide the evidence that will lead them to her killer.

3 :01x03 - Daniel One & Two

Daniel, a shy and awkward boy in his early twenties, is having his first ever date. His mum is delighted and leaves the young couple alone together.

When she comes back, Daniel's girlfriend is lying in a pool of her own blood.

Robert and Alison are visiting a hospital psychiatric unit in an attempt to help her confront her painful memories.

On the ward Alison meets Daniel who has been there since his girlfriend was attacked. He desperately tries to persuade Alison that he wasn't the one responsible for the assault and that it was the other Daniel: Daniel Two.

The doctors have diagnosed Daniel as a pathologically violent schizophrenic, convinced that Daniel Two is a figment of his imagination, but Alison isn't so sure. She thinks the more Daniel is drugged by the well-meaning doctors, the more vulnerable he is to the malevolent spirit of Daniel Two.

4 :01x04 - Misdirection

Desperate to regain some kind of balance in her life, Alison starts looking for a job. An experienced nurse before the spirits took over her life, she finds work at an old people's home. At first, she relishes the normality of her nine to five routine.

But escape from the spirits isn't so simple, and Alison soon stumbles across the photo of Robert's dead son, Josh. It belongs to Robert's mother, one of the residents at the home, and Alison realises that Josh must have directed her towards this job in another attempt to make some kind of emotional contact with his father.

Meanwhile Alison befriends a troubled colleague, Connor. A former patient, Ellen, had Connor to help her die a peaceful death. But when he refused she decided to take her own life, jumping from her bedroom window. Now he is being tormented by Ellen's ghost, convinced that she wants revenge for suffering such an undignified and painful end.

As Connor's visions of Ellen get even more vivid and disturbing Alison worries for his sanity, but it isn't long before she too is confronted by the terrifying spirit of Ellen.

5 :01x05 - Sleeping with the Dead

Sandra Petch is desperate for Alison's help. She thinks her flat is haunted and is petrified by the sights and sounds that surround her.

When Alison comes round to try and help, she witnesses the terrifying tableau of a husband smothering his wife to death, two spirits locked in a repeated loop of domestic violence which Alison can do nothing to stop.

Robert is curious and asks to visit the flat, and all three spend the night there, waiting to see what will happen. As Alison falls asleep she enters a nightmare from which she can't escape, an empathic experience in which she re-lives the last moments of the murdered woman's life. As she does so, Robert experiences the presence of the spirits for the first time, seeing the body of the murdered woman in the bed in which Alison had been lying.

Unable to make sense of what he has witnessed, Robert is in shock, having to consider for the first time that the spirits may not be Alison's fantasies, and that she might really be in contact with his dead son.

6 :01x06 - The 7:59 Club

With her paranoia deepening, Alison thinks she is being haunted by the victims of the train crash which nearly killed her six years earlier. But she soon discovers that the people following her are not the victims, but the survivors of the disaster.

Led by Irene Moser, they are desperate to contact the spirits of those they lost in the crash and have tracked Alison down to help them. They ask her to join their spiritual support group and lead them in a séance in order to communicate with their lost loved ones.

Alison is terrified. She doesn't know if she will be able to survive returning to a moment of such great trauma, and asks Robert for his help. Together they attend the séance, and Robert watches in amazement as Alison slips into a trance and speaks in the voices of the dead, re-experiencing the horror of the crash as she does so.

One by one she addresses the survivors who talk to their dead relatives through Alison.

In a terrifying and emotional climax to the series, both Robert and Alison come into contact with the afterlife in a way that will change their lives forever.

7 :02x01 - Roadside Bouquets

Alison is recovering from the traumatic seance that saw her inhabited by the ghost of Robert's son, and realises she has to dedicate her life to helping spirits. After seeing a strange woman at a roadside, she becomes embroiled in the mystery surrounding a fatal car crash.

8 :02x02 - The Rat Man

Alison and Robert investigate a series of suicides in a prison, where murderer Ian Garland claims an evil spirit urged him to commit multiple crimes. The medium is soon convinced the ghost is responsible for the deaths and tries to exorcise it - but endures terrifying visions of the killer's victims in the process.

9 :02x03 - Lullaby

Alison is contacted by a father who has heard a voice whispering to his infant son through the baby monitor, as she struggles to deal with being haunted by her own mother's spirit. The child's mother refuses to heed the medium's warning to leave the house and becomes convinced her husband is going mad. Robert confronts his long-buried feelings for Jude - before receiving some shocking news

10 :02x04 - Your Hand In Mine

11 :02x05 - Mirrorball

Alison attempts to intervene when the ghost of a man who killed a student starts to haunt the dead girl's best friend - who clearly knows more about the spirit than she is letting on. As the medium becomes more erratic, Robert starts to fear his friend will end up the same way as her mother, but fails to convince Alison to talk about her increasingly odd behaviour.

12 :02x06 - Mind the Bugs Don't Bite

As Alison gives in to the madness induced by her mother's spirit, Robert tracks down the medium's estranged father, hoping he will provide an explanation for his daughter's haunting. The trio spend a stormy night dissecting the secrets of the past - leading to revelations about Alison's childhood and how her mother died.

13 :02x07 - Things Forgotten

Alison investigates when a teenager who has been haunted by visions of a young boy claims the psychic he has been visiting is an impostor, but finds herself unable to connect with the spirit world. While Robert reassures his colleague she still can use her insight into human emotions for the benefit of others, he struggles to find the right moment to tell her the news about his failing health.

14 :02x08 - A Name Written in Water