The twentieth book in the Kay Scarpetta series. Only nine more to go – including the one due this October. The title refers to a palaeontological dig in Alberta, Canada. A female paleontologist disappeared and several months later Scarpetta is sent an anonymous email containing a short video of the missing woman and a photo of a severed ear. Despite Scarpetta having no connection to palaeontologist, the place in Canada, or even dinosaurs.

Then the body of a woman turns up in Boston Bay, tied to a buoy. Scarpetta manages to recover the body intact. Shortly afterwards she is in court being cross-examined by the lawyer of a billionaire industrialist who has been charged with hiring the murder of his missing wife. But the body in the bay is not her.

And when they do identify the body, it turns out she was someone Marino was flirting with on Twitter, so he comes under suspicion…

Initially, it all seems like yet another plot to destroy Scarpetta’s career and reputation, a feeling only reinforced by the grilling she gets in court and the FBI investigating Marino. But it actually isn’t. It’s just your common or garden psychopath serial killer, of which the US has plenty, and Scarpetta’s involvement is more by accident than by design, or at the very least a happy and contrived coincidence on the part of the killer.

It also starts to look like Scarpetta is going to dangle herself as a victim, only to turn the tables – as in many other books in the series. But again, the killer abducts her only because of, er, happy coincidence, and for other reasons she’s rescued by the usual gang – Lucy, Marino, etc.

I’ve no idea if Cornwell was deliberately teasing the reader with hints of her more formulaic books, but I did like the fact The Bone Bed (2012, USA) didn’t hew closely to the formula. The title came from an actual bone bed visited by Cornwell, which inspired the novel – but it’s actually more or less peripheral to the story. She could have dropped the murder of the palaeontologist and it wouldn’t have substantially changed the plot.

A middling Scarpetta novel, I think. Slight above average, but not one of the more memorable ones. In its defence, it focuses more on crimes, and a killer, who has absolutely nothing to do with Scarpetta.