Grahame in this work. Merriman is plunged headlong into the world of espionage and when Grahame is seriously wounded it falls to Merriman to carry on the investigation.Young James Merriman must keep all his wits about him to foil these plans especially when his adversary is revealed to be an exceptional French agent Henri Moreau who hopes that by helping the Irish to throw off the English yoke, France will be able to use Irish ports from which to attack England.