Hardy Boys 30: The Wailing Siren Mystery

Series

• Halflife.net
• The Hardy Boys: The Hidden Theft (2008)
• The Hardy Boys: The Perfect Crime (2009)

• The Hardy Boys: The Hidden Theft (2009)

• The Hardy Boys: Treasure On The Tracks (2009)

Books

• Hardy Boys 11: While the Clock Ticked
• Hardy Boys 12: Footprints Under the Window
• Hardy Boys 13: The Mark on the Door
• Hardy Boys 14: The Hidden Harbor Mystery
• Hardy Boys 15: The Sinister Signpost
• Hardy Boys 18: The Twisted Claw
• Hardy Boys 19: The Disappearing Floor (1993)
• Hardy Boys 20: Mystery of the Flying Express (2000)
• Hardy Boys 21: The Clue of the Broken Blade
• Hardy Boys 22: The Flickering Torch Mystery
• Hardy Boys 23: The Melted Coins
• Hardy Boys 24: The Short-Wave Mystery
• Hardy Boys 25: The Secret Panel
• Hardy Boys 26: The Phantom Freighter
• Hardy Boys 27: The Secret of Skull Mountain (1999)
• Hardy Boys 28: The Sign of the Crooked Arrow
• Hardy Boys 29: The Secret of the Lost Tunnel (2001)
• Hardy Boys 31: The Secret of Wildcat Swamp
• Hardy Boys 32: The Crisscross Shadow
• Hardy Boys 33: The Yellow Feather Mystery
• Hardy Boys 34: The Hooded Hawk Mystery
• Hardy Boys 35: The Clue in the Embers
• Hardy Boys 36: The Secret of Pirates' Hill
• Hardy Boys 37: The Ghost at Skeleton Rock
• Hardy Boys 38: Mystery at Devil's Paw (2001)
• Hardy Boys 39: The Mystery of the Chinese Junk
• Hardy Boys 40: Mystery of the Desert Giant
• Hardy Boys 41: The Clue of the Screeching Owl
• Hardy Boys 42: Viking Symbol Mystery
• Hardy Boys 43: The Mystery of the Aztec Warrior
• Hardy Boys 44: The Haunted Fort (2001)
• Hardy Boys 45: The Mystery of the Spiral Bridge
• Hardy Boys 6: The Shore Road Mystery
• Hardy Boys 7: The Secret of the Caves (2000)
• Hardy Boys 8: The Mystery of Cabin Island
• Hardy Boys 9: The Great Airport Mystery
• The Hardy Boys 1: The Tower Treasure
• The Hardy Boys 10: What Happened at Midnight
• The Hardy Boys 16: A Figure in Hiding
• The Hardy Boys 17: The Secret Warning
• The Hardy Boys 2: The House on the Cliff
• The Hardy Boys 4: The Missing Chums
• The Hardy Boys 5: Hunting for Hidden Gold