Cleek: The Man of the Forty Faces

Meet Hamilton Cleek - man of mystery, and master of disguise and derring-do. Cleek's exploits are, to say the least, highly improbable, but the book is enormous fun. The goodies are good and the baddies are very bad indeed, but beware - things are not always what they seem. Suspend your disbelief and enjoy a rattling good yarn! Cleek is the central figure in dozens of short stories that began to appear in 1910 and were subsequently collected in a series of books. (Summary by Ruth Golding and Wikipedia)