1980: What earthly science could account for the fantastic buildings, the moving mountains, that Ireland was hiding behind its Erin Curtain? British intelligence wanted a young mathematician, Thomas Sherwood, to find out. For a lark, Sherwood agreed--but once inside Ireland, he found himself enmeshed in a dark web of greed and cruelty..Here are excitement, suspense and sudden death, in the tradition of John Buchan's "The 39 Steps."