I'm afraid I cannot report anything but how disappointed I am with this Robin Cook effort which comes nowhere near the quality of some of his books that have both gone before and come after it.
Firstly the main gripe I have with it, is that it is a blatant copy of a plot idea he has used in at least two other books of his I've read (Coma and Brain) insomuch as you have a doctor in a hospital discover some strange goings on, this leads him on a dangerous trail of investigation until finally he uncovers some sinister medical goings on. Sorry Robin, you've done it before.
In this version of the story we meet Dr Jason Howard, a conscientious doctor at a Boston hospital. He is instantly concerned when several of his patients develop chronic heart problems and mysteriously die. What makes the problem more sever is that only weeks before all these patients have had health check ups in which Dr Howard passed them with satisfactory results. The only common factor seems to be a fairly unhealthy lifestyle led by all the victims, although post mortem examination reveal the internal organs expected in a 100 year old person.
Another eminent doctor at the hospital invites Dr Howard out for dinner to reveal to him some concerns he is having, however before he can disclose his worries he is struck down by a heart attacks and dies. Dr Howard's investigations take him into the seedy world of strip joints and the salmon spawning grounds of Seattle before he eventually discovers the disturbing and alarming reasons for all that is happening.
Apart from the fact we've heard the story before this time it's just not very well written. There is absolutely no character depth or development so the people in the book are cardboard cut-outs, the evil mind behind it all is so easy to spot it takes all the fun away from the investigation and even for 1988 this books shows some remarkable ignorant opinions about people.
I'll go back to Robin Cook at a later date no doubt, and even in this poor offering he shows he can still write a pacey storyline, but this is definitely not one of his best.