Based on P.D. James's global bestsellers, Bertie Carvel (Jonathan Strange & Mr Norrell, Doctor Foster) returns as Inspector Adam Dalgliesh in this riveting murder mystery series. Death of an Expert Witness begins with a senior forensic biologist being found dead in his Lab. Dalgliesh is called to East Anglia, where the murderer is lying in wait to strike again. A Certain Justice, an illustrious but controversial defence barrister is found dead in her chambers. Suspicion falls on her colleagues and her daughter's new fiancé. The Murder Room, a young doctor is set on fire in the grounds of his family museum. Everyone who works there comes under suspicion, including his own siblings.