Someone, it seems, has been murdering MI5 officers. And murdering them in a particularly gruesome and horrific way. A hammer is involved, as is a skinning-knife. The security services, however, are more concerned with the why than the how. Because it is beginning to look as if the killer is an insider, SAS-trained, one of the Regiment"s own. The body-count is mounting, and under strict cover of secrecy Alex is ordered to track down and eliminate the killer. 411+pp. Good used