Old Acquaintance — Nicholas Guild

In this, the second novel in the Ray Guinness series, he is assigned to stop the apparent sabotage of a highly secret research project in Clemson, South Carolina. The opposition, code named Flycatcher, has been threatening to murder the children of staff members unless their parents leave the project immediately.On the face of it, this isn't a very high priority assignment, but Ray soon learns that his superiors had a very specific motive for sending him Down South to the land of mint juleps and non-existent gun laws, where he encounters his own past in the persons of his ex-wife and their nine year old daughter.It isn't very long before Guinness-and his enemies-learn just how dangerous a father's love can be.