Alison Mundy is still recovering from the traumatic seance that put her in a coma. She realises that she has dedicated her life to helping the spirits and when she sees one on the roadside, she is determined to find out what has happened. Before long she is entangled in a story that involves a car crash and some friends. But this time, she won't be able to help everyone...

Alison and Robert visit a prison after a series of mysterious suicides take place behind bars. There they encounter a serial killer, who blames a malevolent spirit called the Rat Man on his own murderous spree. As Alison strives to banish the evil from the place to help the other convicts, she puts herself in terrible danger.

A father comes to Alison to ask her about a baby monitor that whispers to his child. Alison is sure it is a spiritual event, but the mother isn't so sure. Alison herself, is being contacted by her own mother's spirit and Robert doesn't believe that it's happening. Just when everything seems to have been organised, it gets worse.

Alison visits a woman who starts exhibiting symptoms of the disease that her fiance's first wife was killed by, and realises that she is possessed by the dead woman's spirit. Meanwhile, Robert's sudden scepticism baffles Alison, who is unaware of his fatal illness.

A woman called Gemma comes to Alison, asking for her help, after her best friend was killed by a ghost. Alison is sure Gemma knows more about the spirit than she is letting on. But Alison has other things to worry about - her mother's spirit is still around and still cleaning. In the mean time, Robert comes clean to Jude about his tumour.

With the household being taken over, Alison is unable carry on, and gives into her mother's spirit. Robert decides to contact the psychic's estranged father, who Alison is reluctant to talk to. But sooner or later, she has to deal with her own past, and the death of her mother.

With Robert in a coma at the hospital, Alison rushes to his bedside, finding Jude there, who is less than happy to see her. Whilst in the hospital, waiting, the psychic witnesses a strange nurse wandering the corridors. This is confirmed by many of the workers, who have heard rumours about this unusual being. Why is she there - and does she mean the end for Robert?