I — The Hunted Man
II — The Death Trick
III — Fangs
IV — The Touch That Slew
V — Arctic Bait
VI — Monk In Trouble
VII — Nick Clipton
VIII — Death Decoy
IX — Arizona Trail
X — Man Bats
XI — The Canyon Fight
XII — Killer Chasm
XIII — Hot Rock
XIV — The Plot Sinister
XV — The Thundering Death
XVI — New Suspect
XVII–Clue Trail
XVIII — Mysterious Motives
XIX — Truck Death
XX — The Fiery Trail
XXI — Robot Men
XXII — The Death Light
