A series of 12 2-reel mystery thrillers, each story complete in itself. Episode titles: #1: The Strangler's Cord (1915); #2: The Disappearing Necklace (1915); #3: The Secret Code (1915); #4: The Riddle of the Rings (1915); #5: The Substituted Jewel (1915); #6: A Double Identity (1915); #7: The False Clue (1915); #8: When Thieves Fall Out (1915); #9: Under Oath (1915); #10: _The Wolf's Prey (1915)_; #11: The Man on Watch (1915); #12: The Man in Irons (1915).