In Harm's Way — Paul A. Breeze

This is a gripping thriller that combines a medical detective story with political conspiracy, and confronts some of the most pressing moral issues posed by contemporary science today.
Why did Steven Hable kill himself, and how is his death connected to a cluster of leukemia cases he was investigating in a remote town in the north of England? These are the questions that Tony Marchbank, a medical researcher, must answer in the wake of his friend's apparent suicide.
Marchbank continues with Hable's research into the outbreak of leukemia cases. Amidst efforts to sabotage his work and an orchestrated campaign to discredit him, Marchbank perseveres. His search leads to a horrifying discovery.
In 1952, the town of Roughburn was used as the site of a beastly experiment to judge the chances of surviving an atomic war. It is the children of this quiet town who bear the brunt of this cold and malicious experiment. Marchbank's investigation exposes the lengths to which man will go in the name of science. He will not stop until he brings to justice the people involved.