Radio presenter Tom Prince hosts the graveyard slot: the after-midnight phone-in programme for Manchester's Metrosound. Despite a broken marriage, he now finds personal happiness with a caring girlfriend and his seven-year-old son Danny. Otherwise Tom is stuck in a rut...and about to be hurtled out of it with terrifying momentum.

It begins with just another late-night call, from a man who talks in a strange whisper. But this one claims he has committed a murder, and is standing over his victim's corpse.

Thus begins a chilling nightly dialogue between Tom and 'The Whisperer'.Badgered by the police intent on tracing the killer, Tom reluctantly keeps the line open, while the gruesome deaths continue.And as his audience constantly grows, he suddenly finds himself a celebrity.

Though Tom himself is the focus of this terrifying bloodlust, his child and his girlfriend are soon exposed to extreme danger - never knowing from which dark shadow the next surprise blow will fall.

And as he begins to understand the full horror of The Whisperer's psychosis, Tom realises that his success may cost them all too high a price.