The Tower Treasure | (1927) |    |
The House on the Cliff | (1927) |    |
The Secret of the Old Mill | (1927) |    |
The Missing Chums | (1928) |    |
Hunting for Hidden Gold | (1928) |    |
The Shore Road Mystery | (1928) |    |
The Mystery of Cabin Island | (1929) |    |
The Secret of the Caves | (1929) |    |
The Great Airport Mystery | (1930) |    |
What Happened at Midnight | (1931) |    |
While the Clock Ticked | (1932) |    |
Footprints Under the Window | (1933) |    |
The Mark on the Door | (1934) |    |
The Hidden Harbor Mystery | (1935) |    |
The Sinister Sign Post | (1936) |    |
A Figure in Hiding | (1937) |    |
The Secret Warning | (1938) |    |
The Twisted Claw | (1939) |    |
The Disappearing Floor | (1940) |    |
Mystery of the Flying Express | (1941) |    |
The Clue of the Broken Blade | (1942) |    |
The Flickering Torch Mystery | (1943) |    |
The Melted Coins | (1944) |    |
The Short-Wave Mystery | (1945) |    |
The Secret Panel | (1946) |    |
The Phantom Freighter | (1947) |    |
The Secret of Skull Mountain | (1948) |    |
The Sign of the Crooked Arrow | (1949) |    |
The Secret of the Lost Tunnel | (1950) |    |
The Wailing Siren Mystery | (1951) |    |
The Secret of Wildcat Swamp | (1952) |    |
The Crisscross Shadow | (1953) |    |
The Yellow Feather Mystery | (1953) |    |
The Hooded Hawk Mystery | (1954) |    |
The Clue in the Embers | (1955) |    |
The Secret of Pirates' Hill | (1956) |    |
The Ghost at Skeleton Rock | (1957) |    |
The Mystery at Devil's Paw | (1959) |    |
The Mystery of the Chinese Junk | (1959) |    |
Mystery of the Desert Giant | (1960) |    |
The Clue of the Screeching Owl | (1962) |    |
The Viking Symbol Mystery | (1962) |    |
The Mystery of the Aztec Warrior | (1964) |    |
The Haunted Fort | (1964) |    |
The Mystery of the Spiral Bridge | (1965) |    |
The Secret Agent on Flight 101 | (1967) |    |
Mystery of the Whale Tattoo | (1967) |    |
The Arctic Patrol Mystery | (1969) |    |
The Bombay Boomerang | (1970) |    |
Danger on Vampire Trail | (1971) |    |
The Masked Monkey | (1972) |    |
The Shattered Helmet | (1973) |    |
The Clue of the Hissing Serpent | (1974) |    |
The Mysterious Caravan | (1975) |    |
The Witchmaster's Key | (1975) |    |
The Jungle Pyramid | (1976) |    |
The Firebird Rocket | (1978) |    |
The Sting of the Scorpion | (1978) |    |
Night of the Werewolf | (1979) |    |
Mystery of the Samurai Sword | (1979) |    |
The Pentagon Spy | (1980) |    |
The Apeman's Secret | (1980) |    |
The Mummy Case | (1980) |    |
Mystery of Smugglers Cove | (1980) |    |
The Stone Idol | (1980) |    |
The Vanishing Thieves | (1981) |    |
The Outlaw's Silver | (1981) |    |
The Submarine Caper / Deadly Chase | (1981) |    |
The Four-Headed Dragon | (1981) |    |
The Infinity Clue | (1981) |    |
Track of the Zombie | (1982) |    |
The Voodoo Plot | (1982) |    |
The Billion Dollar Ransom | (1982) |    |
Tic-Tac-Terror | (1982) |    |
Trapped at Sea | (1982) |    |
Game Plan for Disaster | (1982) |    |
The Crimson Flame | (1983) |    |
Cave-In | (1983) |    |
Sky Sabotage | (1983) |    |
The Roaring River Mystery | (1984) |    |
The Demon's Den | (1984) |    |
The Blackwing Puzzle | (1984) |    |
The Swamp Monster | (1985) |    |
Revenge of the Desert Phantom | (1985) |    |
The Skyfire Puzzle | (1985) |    |
The Mystery of the Silver Star | (1987) |    |
Program for Destruction | (1987) |    |
Tricky Business | (1988) |    |
Sky Blue Frame | (1988) |    |
Danger on the Diamond | (1988) |    |
Shield of Fear | (1988) |    |
The Shadow Killers | (1988) |    |
The Serpent's Tooth Mystery | (1988) |    |
Breakdown in Axeblade | (1989) |    |
Danger on the Air | (1989) |    |
Wipeout | (1989) |    |
Cast of Criminals | (1989) |    |
Spark of Suspicion | (1989) |    |
Dungeon of Doom | (1989) |    |
The Secret of the Island Treasure | (1990) |    |
The Money Hunt | (1990) |    |
Terminal Shock | (1990) |    |
The Million Dollar Nightmare | (1990) |    |
Tricks of the Trade | (1990) |    |
Smoke Screen Mystery | (1990) |    |
Attack of the Video Villains | (1991) |    |
Panic on Gull Island | (1991) |    |
Fear on Wheels | (1991) |    |
The Prime-Time Crime | (1991) |    |
The Secret of Sigma Seven | (1991) |    |
Three-Ring Terror | (1991) |    |
Demolition Mission | (1992) |    |
Radical Moves | (1992) |    |
The Case of the Counterfeit Criminals | (1992) |    |
Sabotage at Sports City | (1992) |    |
Rock 'N' Roll Renegades | (1992) |    |
The Baseball Card Conspiracy | (1992) |    |
Danger in the Fourth Dimension | (1993) |    |
Trouble at Coyote Canyon | (1993) |    |
The Case of the Cosmic Kidnapping | (1993) |    |
The Mystery in the Old Mine | (1993) |    |
Carnival of Crime | (1993) |    |
The Robot's Revenge | (1993) |    |
Mystery with a Dangerous Beat | (1994) |    |
Mystery on Makatunk Island | (1994) |    |
Racing to Disaster | (1994) |    |
Reel Thrills | (1994) |    |
Day of the Dinosaur | (1994) |    |
The Treasure at Dolphin Bay | (1994) |    |
The Hypersonic Secret | (1995) |    |
Cross-Country Crime | (1995) |    |
Sidetracked to Danger | (1995) |    |
Crusade of the Flaming Sword | (1995) |    |
Maximum Challenge | (1995) |    |
Crime in the Kennel | (1995) |    |
The Cold Cash Caper | (1996) |    |
High Speed Showdown | (1996) |    |
The Alaskan Adventure | (1996) |    |
The Search for the Snow Leopard | (1996) |    |
Slam Dunk Sabotage | (1996) |    |
The Desert Thieves | (1996) |    |
Lost in Gator Swamp | (1997) |    |
The Giant Rat of Sumatra | (1997) |    |
The Secret of Skeleton Reef | (1997) |    |
Terror at High Tide | (1997) |    |
The Mark of the Blue Tattoo | (1997) |    |
Trial and Terror | (1997) |    |
The Rocky Road to Revenge | (1998) |    |
The Chase for the Mystery Twister | (1998) |    |
The Ice Cold Case | (1998) |    |
The Crisscross Crime | (1998) |    |
Danger in the Extreme | (1998) |    |
Eye on Crime | (1998) |    |
The Caribbean Cruise Caper | (1999) |    |
The Hunt for the Four Brothers | (1999) |    |
A Will to Survive | (1999) |    |
The Lure of the Italian Treasure | (1999) |    |
The London Deception | (1999) |    |
Daredevils | (2000) |    |
A Game Called Chaos | (2000) |    |
Training for Trouble | (2000) |    |
The End of the Trail | (2000) |    |
The Spy That Never Lies | (2000) |    |
Skin & Bones | (2000) |    |
Crime in the Cards | (2001) |    |
Past and Present Danger | (2001) |    |
Trouble Times Two | (2001) |    |
The Castle Conundrum | (2001) |    |
Ghosts of a Chance | (2001) |    |
Kickoff to Danger | (2001) |    |
The Test Case | (2002) |    |
Trouble In Warp Space | (2002) |    |
Speed Times Five | (2002) |    |
Hide-and-Sneak | (2002) |    |
Trick-or-Trouble | (2002) |    |
In Plane Sight | (2002) |    |
The Case of the Psychic's Vision | (2003) |    |
The Mystery of the Black Rhino | (2003) |    |
Passport to Danger | (2003) |    |
Typhoon Island | (2003) |    |
Double Jeopardy | (2003) |    |
The Secret of the Soldier's Gold | (2003) |    |
Warehouse Rumble | (2004) |    |
The Dangerous Transmission | (2004) |    |
Wreck and Roll | (2004) |    |
Hidden Mountain | (2004) |    |
No Way Out | (2004) |    |
Farming Fear | (2004) |    |
One False Step | (2005) |    |
Motocross Madness | (2005) |    |
Hey, well done thx 🙂