Book excerpt: A quarter of a million pounds worth of diamonds have been stolen from an Amsterdam bank - a prize big enough to attract treasure hunters. Furse, the Englishman, has knowledge of the stones' whereabouts and hopes this wealth will make his future and that of his son secure. Detective Inspector Molenaar, acting for the bank; Constanta the Dutch girl, and Sluiter, who mysteriously dies, are also in the race. Then there are Rohner and Elsa, top-flight crooks unburdened by scruples, together with Charlie, Furse's shady friend and Farmer Beukleman. Drama and tension mount in this tale of excitement and suspense.