According to the Evidence (Richard Pryor Mysteries) - Tapa dura

After starting their risky venture of a private forensic consultancy, Doctor Richard Pryor (now a Home Office pathologist) and forensic biologist Angela Bray have now become firmly established. An apparent bizarre suicide in a remote Welsh farm starts them on a new investigation, which is followed by an unusual request from the War Office. And when a Cotswold veterinary surgeon is charged with poisoning his ailing wife, can Pryor's expert evidence save him from the gallows? A forensic mystery of the 1950s. (mystery & detective).

Bernard Knight is the author of the Crown John Mysteries series and is a member of The Medieval Murderers.