William Arden

Book #13: Secret of the Crooked Cat

Book #22: Mystery of the Dead Man's Riddle

Book #26: Mystery of the Headless Horse

Book #33: Mystery of the Purple Pirate

Book #38: Mystery of the Smashing Glass

Book #15: Mystery of the Flaming Footprints

Book #32: Mystery of the Blazing Cliffs

Book #38: Mystery of the Smashing Glass

Book #39: Mystery of the Trail of Terror

Book #6: Mystery of Skeleton Island

Book #7: Mystery of the Fiery Eye

Book #11: Mys of Talking Skull

Book #15: Mys of Flaming Footprints

Book #31: Mystery of the Scar-faced Beggar

Secret of Phantom Lake

Book #26: Alfred Hitchcock and the Three Investigators in the Mystery of the Headless Horse

Book #33: Myst of Purple Pirate

Book #38: Myst of Smashing Glass

Book #18: Htchck Mys Shrnkng Hse

Book #22: Hchck Mys Dead Man Riddl

Book #21: Hchck SEC Haunted Mirror

Book #26: Hitck Mys Headless Horse

Book #28: Hchck Myst Deadly Double

Book #42: Myst Wrecker's Rock

Myst Kidnapped Whale

Book #1: Htchck Scrt Terror Cas

Book #1: Secret of Terror Castl

Book #2: Myst Stuttering Parrot

Book #2: Ti #02 Myst of the Stuttering

Book #4: Htchck Mys Grn Ghst-Pa

Book #5: The Mystery of the Vanishing Treasure

Book #5: Myst Vanish Treas-Htck

Book #10: Myst of Moaning Cave

Book #11: The Mystery of the Talking Skull

Book #4: Htchck Mys Grn Ghst-Pa

Book #5: The Mystery of the Vanishing Treasure

Book #5: Myst Vanish Treas-Htck

Book #11: The Mystery of the Talking Skull

Book #21: Secret of Haunted Mirr

Book #1: Hot Wheels

Book #1: Hot Wheels

Book #13: Secret of the Crooked Cat

Book #18: The Shrinking House

Book #19: Phantom Lake

Book #21: The Haunted Mirror

Book #23: The Invisible Dog

Book #10: The Mystery of the Moaning Cave