Mary E. Hanshew & Thomas W. Hanshew 
Riddle of the Frozen Flame 

This classic of golden-age detective fiction features investigative mastermind Hamilton Cleek, who has vowed to use his remarkable powers of disguise to help people in need. In this tale, Cleek is determined to figure out why people keep disappearing in a remote area of eastern England where a mysterious flame is often seen at night. Fans of The Hound of the Baskervilles will definitely enjoy this tale.