When a senior forensic biologist is found dead in his lab, Dalgliesh is called to East Anglia, where the murderer is lying in wait to strike again.

After another body is discovered, Dalgliesh and Miskin untangle a web of infidelities in this rural community, unearthing a killer with secrets to hide and tracks to cover.

Dalgliesh, Kate Miskin, and new D.S. Daniel Tarrant investigate the murder of an abrasive female defence barrister who successfully defended a shady young man on murder charges, only for him to begin dating her daughter.

Marcus and Caroline Dupayne struggle to convince their brother, Neville, to renew the lease on their family's museum. When Neville's car is torched on the museum grounds and he perishes inside, all who work there are suspects - including his siblings.

The grisly discovery in the trunk provides a new line of inquiry that leads to a hidden room, ties to intelligence agents, and a scandalous society at the heart of the museum. The team race to crack the case as the killer prepares to strike again.