Peter Jürgensmeier

Lord Paddington, an honorable member of society, is blown up with a small tennis ball. "Die vier Gerechten" are not of this opinion, however: "Sentenced to death and executed for countless crimes" they leave at the scene. More honorable personalities are being assassinated, while Higgins is still in the dark.

Strange, rhymed advertisements in the newspaper unsettle three London gangsters - and rightly so, because soon the first of them are killed. The mysterious killer also catches a shady lawyer. Higgins and Lane find out that the key to the crimes is an unsolved diamond heist.