Havoc

Crowned heads meet in Vienna and put their names to something England badly needs to see; Bellamy, the King's Spy, has failed to find out what, and the hunt for the document — by way of an opera singer all Vienna raves about, and a great deal of money — becomes a race against a European war. Oppenheim wrote more than a hundred thrillers, dictating them to a secretary while walking on the Riviera.