A serial killer is terrorising London – but not the normal serial killer. This murderer is experimenting – just how long can he control his victims, torturing them in the most unusual way, before they die? He is getting better with the feathers each time – but that does not mean he will stop. Detective Inspector David Maguire and his partner are on the trail of the killer but it is a trail that has baffled them from the start – what is the killer trying to prove? What is his aim? At the same time investigative reporter Zack Tighe is following the story closely – perhaps a little too closely – and is proving to be far from helpful.