The mystery of the invisible hand：A Henry Spearman mystery The case of the gilded lily：a Perry Mason mystery The mystery of the invisible hand The case of the lazy lover：a Perry Mason mystery The case of the lonely heiress：a Perry Mason mystery The mystery of the invisible spy The mystery of the invisible spy / The case of the dubious bridegroom：a Perry Mason mystery The case of the terrified typist：a Perry Mason mystery The case of the green-eyed sister：a Perry Mason mystery