Cleek
Cleek of Scotland Yard
Cleek of Scotland Yard: Detective Stories
Cleek of Scotland Yard: detective stories
Cleek's Government Cases
Cleek, Volume 1
The Man of the Forty Faces
The Riddle of the Frozen Flame
The Riddle of the Frozen Flame (Dodo Press)
The Riddle of the Night: Being the Record of a Singular Adventure of that .
The Riddle of the Purple Emperor