The career of the Yorkshire Choker in under way.
If Detective- Superintendent Dalziel is unimpressed by the literary phone calls, he's downright angry when Sergeant Wield calls in a clairvoyant.
Linguists, psychiatrists, mediums - it's all a load of bloody nonsense as far as he's concerned, designed to make fools of him and his department.
And meanwhile the Choker strikes again and again...
As usual, Hill's strength is in giving the secondary characters opportunities to develop throughout the series. THey are not just props for the two detectives to excahnge clever lines, and this is what makes the book more than a simple mystery.