The secret of the old mill
1927
What Happened at Midnight
1931
The Melted Coins
1944
The Phantom Freighter
1947
The Sign of the Crooked Arrow
1949
The Secret of the Lost Tunnel
1950
The Mystery of the Aztec Warrior
1964
The Bombay Boomerang
1970
The Witchmaster's Key
1976
The Apeman's Secret
1980
The Ringmaster's Secret
1953
Evil, Inc.
1987
Virtual Villainy
1994
