An evil-tempered forensic scientist is put to death, putting many of his colleagues out of misery. Commander Adam Dalgliesh must exhume the secrets of Dr. Lorrimer's laboratory in order to lay bare the murderous motive hidden in one human heart.

Death of an Expert Witness led Newsweek to crown P. D. James "the new queen of crime."

Review

Time The reigning mistress of murder.

People P. D. James is "the greatest living mystery writer."

From the Inside Flap

Dr. Lorrimer appeared to be the picture of a bloodless, coldly efficient scientist. Only when his brutally slain body is discovered and his secret past dissected does the image begin to change. Once again, Chief Inspector Adam Dalgliesh learns that there is more to human beings than meets the eye -- and more to solving a murder than the obvious clues.