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.

When a teenager, who has been haunted by a young boy, claims a psychic he visits is an impostor, Alison tries to sort things out. However, she find that on this occasion, she can't contact the spirit world. Robert still hasn't told Alison of his tumour, but will he ever get the chance, before it's too late?

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?