This is not one of James’ best novels. As I so often find with her novels the original Adam Dalgleish stories that were written in the ’70s do not have the sense of tension or characterisation of her later novels. Like her other early novel Shroud for a Nightingale it seemed rather dated.
Adam Dalgleish is called in to investigate the murder of a forensic scientist who seemed to be largely unpopular with everyone, so you could see his death coming a mile off. This book has been criticised as having too many characters and this might possibly be the reason that when the murderer was finally revealed I wasn’t that excited about it.
So I would advise reading a later P D James novel in preference to this.