Another new thriller writer with a decent story to tell but lacking the true author's gift of pace and suspense. The result is a novel too long for its content and unrewarding in its central characters. Clearly a great deal of research has gone into re-creating the London of 1940-41 and into the u-boat war which is the book's central theme; but research alone is not enough.
The romantic relationship between the interrogator, Douglas Lindsay, and Dr Mary Henderson a bluestocking archaeologist working in naval intelligence, only half convinces, and therein lies a problem. If the reader is not engaged by the fate of the central characters, the urge to turn the page diminishes.
As a post-script, this observation: the author, a former BBC documentary director, allows Ian Fleming a peripheral role, but otherwise is apparently happy to name his characters mundanely - Lindsay, Jones, Henderson, Herbert, Samuels, Hyde, Brown and so on. A notable exception is Colonel Checkland - after a former BBC Director General?