Death of an Expert Witness
P.D. James Audio Book

When a young girl is found strangled in a field in the Fens, it looks like a routine job for the staff of the East Anglian Forensic Laboratory. But then the senior biologist is found dead in his lab and murder comes closer to home.Commander Adam Dalgliesh faces the most baffling inquiry of his career as the startling evidence begins to point to an unexpected conclusion.