23 Complete Works of William le Queux Hushed UpMademoiselle of Monte CarloNumber 70 BerlinSant of the Secret ServiceSpies of the KaiserThe Count's ChauffeurThe Czar's SpyThe Doctor of PimlicoThe Four FacesThe Golden FaceThe Great White QueenThe House of WhispersThe IntriguersThe Minister of EvilThe Mysterious ThreeThe Mystery of the Green RayThe Red WidowThe Secrets of PotsdamThe Seven SecretsThe Sign of SilenceThe Stretton Street AffairThe White LieThe Zeppelin Destroyer