We are back on duty with Nick Oldham’s gutsy Lancashire cop, Sergeant Jessica Raker. We are in the unpretentious town of Clitheroe, and Raker’s colleague DC Doolan is in the final stages of pancreatic cancer, but is determined to do his job until the – literally – bitter end.

They are hunting a local low-life called Rory Walton, now wanted for murder, after he fire bombed his girlfriend’s house. She subsequently died while in intensive care. Although a raid on Walton’s hideout goes pear-shaped, the police discovered a cache of cannabis and firearms. More importantly, it triggers a memory in Doolan’s mind – the shadow of a twenty year-old unsolved murder case, which Oldham gives us a glimpse of in a brief prologue.

Hanging over the book, the series even, is the baleful shadow of Mags Horsefield (nee Goss) a once beautiful but always formidable woman who ruled with a local criminal reign of terror, but has now disappeared, along with her daughter Caitlin, a great friend of Jess’s daughter Lily.

We soon learn that Mags is alive and well. With Caitlin, she is living in a secure villa in Malta, protected by bodyguards and the same ferocious XL Bully dogs who terrorised her Lancashire scrapyard. Her criminal web is largely intact, and she sits at its centre, like a malevolent spider, controlling her empire via burner phones.

Back in Clitheroe, Jess Raker’s life becomes ever more complex. Her absent – and errant – husband, living away because of work, seems likely to become very ‘ex’. Rory Walton has teamed up with his equally-criminal brother, and she has to concoct a plan to take them down.

Her Boss, DI Price is determined to belittle her at every opportunity and is (unknown to her) in the pay of serious criminals. Added to those problems, she has encountered the spirits of two children murdered in Victorian times. It is unusual for Nick Oldham to venture into supernatural territory, and I was intrigued to see how this thread would be resolved.

As one might expect from an ex-copper, Oldham makes the policing details utterly utterly convincing and, as with his long running and much loved character Henry Christie, he makes Jess Raker very human and totally believable. Death at the Castle Gates will be published by Severn House on 2nd June. To read my reviews of earlier novels in this series, click this link.