Douglas

Ralph Roberts has an incurable case of insomnia, but lack of sleep is the least of his worries. Each night he stays awake, Ralph witnesses more of the odd activity taking place in Derry after dark than he wants to know. The nice young chemist up the street beats his wife and has delusions about beings he calls "The Centurions".

Sergeant Louise Nightingale is content in the knowledge that a psychopath has been put behind bars for a very long time. She is unaware that he was just a student of a much more deadly opponent - a nameless, faceless terror who is intent on proving his prowess on the killing field. It soon becomes clear that Louise is his ultimate goal. Desperately trying to find Nightingale before the killer does, DCI Andrew Fenwick wonders if her continued silence means he is already too late.