Much as in James Michener's more sweeping novels, Arthur Hailey always lards his text with systematic insider research, here seldom seen details about police crime solving. That is good or bad depending on how much uplifting instruction and provocative thought, or immersion in suspense, you seek in a mystery. Actually, we learn all about the crimes long before the ending, so one has to focus on the working out of the many personal relationships and betrayals in this long story. The crimes are old-fashioned but the detection methods are up to date. The story is engrossing, the crimes shocking and convoluted, the killers are fully developed, and the details informative of police lives and outlooks. We shall never see the complex and sympathetic Detective Ainslie again--because Hailey doesn't write series--but, as always in his books, you come away knowing more of how things are run "behind the scenes" and of the attitudes of the team specialists involved.
The plot is a little too pat and the prose flat and distant, but is cumulatively moving. Hailey indulges in flashback tricks, and one can almost see the author's notecards on police procedures, execution, Church history(!), and the failings of the juvenile justice and grand jury systems.