Phyllis Dorothy James, better known as P.D. James, born August 3, 1920, was the author of the Adam Dalgliesh detective novels. The first mystery of hers I read was Death of an Expert Witness, published in 1977. The story centered around a laboratory of forensic experts involved in a murder of one of their own. It was made into a mini-series in 1983 by the ITV network in Britain with Roy Marsden as Dalgleish and Geoffrey Palmer (As Time Goes By) as Dr. Lorrimer. Many of her works were transferred to television and movies, but I found them to be slow because they tended to follow the novels too closely.
Death of an Expert Witness and The Black Tower were my favorites. I read her novel Innocent Blood but had trouble staying awake while reading it. She wrote 14 Adam Dalgliesh novels and dystopian novel The Children of Men, made into a movie starring Clive Owen and Julianne Moore.
P.D. James passed away November 27, 2014 in Oxford.