Marker - Unabridged - Audio CD Author:Robin Cook, George Guidall (Narrator) The master of the medical thriller returns with his most heart-pounding tale yet. — Otherwise healthy people are dying shortly after undergoing minor surgery in New York City hospitals. Dr. Laurie Montgomery and Dr. Jack Stapleton, the sparring lovers and co-workers from a previous Cook novel, VECTOR, must put their romantic difficulties aside wh... more »en Laurie realizes that a serial killer is responsible for the deaths, and that she carries a genetic marker for breast cancer and because she needs surgery herself, could be one of the killer's next targets.