A good yarn and it will sell, but it hasn't quite the staying quality of his early thriller, The Old Dark House. It is a better book -- a more convincing one -- than The Doomsday Men, but it is in the category of these two, rather than his more usual vein, that it belongs.... Timed for today, this is a story of counter-espionage in an English industrial town of the North Midlands. Bad leakage of information made it important that Humphrey Neyland be sent there to size up the situation, and to link the various sources of information into a whole picture. Gretley proved more fertile soil than even he had been led to expect, and the reader goes along, almost step by step with him, as he suspects this person, discards that, and plays his hunches to beat the local police to the solution of the identity of the major criminal in the ring. Plenty of violence, narrow escapes, and so forth. And a good picture of the feel of the town -- and its people. Straight entertainment value.