CONTENTS

1.[THE UNEXPECTED GUEST]
2.[THE MAN FROM THE ASYLUM]
3.[WE HEAR MORE ABOUT LI CHANG YEN]
4.[THE IMPORTANCE OF A LEG OF MUTTON]
5.[DISAPPEARANCE OF A SCIENTIST]
6.[THE WOMAN ON THE STAIRS]
7.[THE RADIUM THIEVES]
8.[IN THE HOUSE OF THE ENEMY]
9.[THE YELLOW JASMINE MYSTERY]
10.[ WE INVESTIGATE AT CROFTLANDS]
11.[A CHESS PROBLEM]
12.[THE BAITED TRAP]
13.[THE MOUSE WALKS IN]
14.[THE PEROXIDE BLONDE]
15.[THE TERRIBLE CATASTROPHE]
16.[THE DYING CHINAMAN]
17.[NUMBER FOUR WINS A TRICK]
18.[IN THE FELSENLABYRYNTH]