Another of the ex-convict-author's semi-suspense entertainments features the team of Paul , a veteran, and his younger aide, Gordon Russell, when the arrival of Sergeant's daughter Lucy, from America, threatens his exposure in her eyes. They meat in Paris, just after they secure the money for the trip from a pilot, Slezak, an easy mark but also a crook. Slezak tries to get it back, by muscling in on their next enterprise, and for Lucy's sake (or rather her mother) they plan a big swindle in Zurich, call it off at the last minute. Lucy, predictably, has fallen in love with Gordon and stays loyal to him- and to her father- even after Siezak turns them in and they are deported to England for trial.... Perhaps it is the romance, and benevolence, that lessens the tension of his earlier books. Or perhaps the literary life sentence is observing the law of diminishing returns.