Double Crossing

Double Crossing is a Hardy Boys and Nancy Drew Supermystery novel.

Nancy and George are on a cruise ship, with George being the "social director" of the whole establishment. The two are having fun when suddenly, Nancy realizes of a plot involving the sale of CIA secrets, and a secret agent. Meanwhile, the Hardys are in the ship, going undercover as a photographer and a waiter, to pursue a group of burglars who target wealthy men and women.

The Hardy Boys

Series

Original	The Tower Treasure The House on the Cliff The Secret of the Old Mill The Missing Chums Hunting for Hidden Gold The Shore Road Mystery The Secret of the Caves The Mystery of Cabin Island The Great Airport Mystery What Happened at Midnight While the Clock Ticked Footprints under the Window The Mark on the Door The Hidden Harbor Mystery The Sinister Signpost A Figure in Hiding The Secret Warning The Twisted Claw The Disappearing Floor Mystery of the Flying Express The Clue of the Broken Blade The Flickering Torch Mystery The Melted Coins The Short-Wave Mystery The Secret Panel The Phantom Freighter The Secret of Skull Mountain The Sign of the Crooked Arrow The Secret of the Lost Tunnel The Wailing Siren Mystery The Secret of Wildcat Swamp The Crisscross Shadow The Yellow Feather Mystery The Hooded Hawk Mystery The Clue in the Embers The Secret of Pirates' Hill The Ghost at Skeleton Rock The Mystery at Devil's Paw The Mystery of the Chinese Junk Mystery of the Desert Giant The Clue of the Screeching Owl The Viking Symbol Mystery The Mystery of the Aztec Warrior The Haunted Fort The Mystery of the Spiral Bridge The Secret Agent on Flight 101 Mystery of the Whale Tattoo The Arctic Patrol Mystery The Bombay Boomerang Danger on Vampire Trail The Masked Monkey The Shattered Helmet The Clue of the Hissing Serpent The Mysterious Caravan The Witchmaster's Key The Jungle Pyramid The Firebird Rocket The Sting of the Scorpion

Digest	Night of the Werewolf Mystery of the Samurai Sword The Pentagon Spy The Apeman's Secret The Mummy Case Mystery of Smugglers Cove The Stone Idol The Vanishing Thieves The Outlaw's Silver The Submarine Caper (retitled Deadly Chase) The Four-Headed Dragon The Infinity Clue Track of the Zombie The Voodoo Plot The Billion Dollar Ransom Tic-Tac-Terror Trapped at Sea Game Plan for Disaster The Crimson Flame The Skyfire Puzzle Cast of Criminals Fear on Wheels Day of the Dinosaur Crime in the Kennel Cross-Country Crime The Search for the Snow Leopard Eye on Crime The Caribbean Cruise Caper The Hunt for the Four Brothers A Will to Survive Daredevils A Game Called Chaos Training for Trouble The End of the Trail Skin & Bones Crime in the Cards Past And Present Danger Trouble Times Two The Castle Conundrum In Plane Sight Passport to Danger Warehouse Rumble The Dangerous Transmission

Casefiles	Dead on Target Evil, Inc. Cult of Crime See No Evil Perfect Getaway Street Spies Running on Empty River Rats

Undercover Brothers	Extreme Danger Running On Fumes Boardwalk Bust Operation: Survival Top Ten Ways to Die Martial Law Blown Away Hurricane Joe Trouble in Paradise The Mummy's Curse Hazed Death And Diamonds Bayport Buccaneers Murder At The Mall Pushed Foul Play Feeding Frenzy Comic Con Artist Deprivation House (Murder House trilogy) Murder House Double Trouble (Double Trouble trilogy) Galaxy X (Galaxy X trilogy) The Children of the Lost (Lost Mystery trilogy)

Crossovers

Authors

Characters

Frank Hardy
Joe Hardy
Fenton Hardy
Laura Hardy
Vanessa Bender
Phil Cohen
Chief Ezra Collig
Belinda Conrad
Brian Conrad
The Gray Man
Aunt Gertrude
Biff Hooper
Chet Morton
Iola Morton
Tony Prito
Callie Shaw

Locations

Organizations

American Teens Against Crime
The Assassins
MUX
The Network
Warring Adolescents Revenge Division

Nancy Drew

The series and novels

Nancy Drew Mystery Stories

1930s	The Secret of the Old Clock (1930) The Hidden Staircase (1930) The Bungalow Mystery (1930) The Mystery at Lilac Inn (1931) The Secret at Shadow Ranch (1931) The Secret of Red Gate Farm (1931) The Clue in the Diary (1932) Nancy's Mysterious Letter (1932) The Sign of the Twisted Candles (1933) The Password to Larkspur Lane (1933) The Clue of the Broken Locket (1934) The Message in the Hollow Oak (1935) The Mystery of the Ivory Charm (1936) The Whispering Statue (1937) The Haunted Bridge (1937) The Clue of the Tapping Heels (1939)

1940s	The Mystery of the Brass-Bound Trunk (1940) The Mystery at the Moss-Covered Mansion (1941) The Quest of the Missing Map (1942) The Clue in the Jewel Box (1943) The Secret in the Old Attic (1944) The Clue in the Crumbling Wall (1945) The Mystery of the Tolling Bell (1946) The Clue in the Old Album (1947) The Ghost of Blackwood Hall (1948) The Clue of the Leaning Chimney (1949)

1950s	The Secret of the Wooden Lady (1950) The Clue of the Black Keys (1951) The Mystery at the Ski Jump (1952) The Clue of the Velvet Mask (1953) The Ringmaster's Secret (1953) The Scarlet Slipper Mystery (1954) The Witch Tree Symbol (1955) The Hidden Window Mystery (1956) The Haunted Showboat (1957) The Secret of the Golden Pavilion (1959)

1960s	The Clue in the Old Stagecoach (1960) The Mystery of the Fire Dragon (1961) The Clue of the Dancing Puppet (1962) The Moonstone Castle Mystery (1963) The Clue of the Whistling Bagpipes (1964) The Phantom of Pine Hill (1965) The Mystery of the 99 Steps (1966) The Clue in the Crossword Cipher (1967) The Spider Sapphire Mystery (1968) The Invisible Intruder (1969)

1970s	The Mysterious Mannequin (1970) The Crooked Banister (1971) The Secret of Mirror Bay (1972) The Double Jinx Mystery (1973) Mystery of the Glowing Eye (1974) The Secret of the Forgotten City (1975) The Sky Phantom (1976) The Strange Message in the Parchment (1977) Mystery of Crocodile Island (1978) The Thirteenth Pearl (1979) The Triple Hoax (1979)

1980s	The Flying Saucer Mystery (1980) The Secret in the Old Lace (1980) The Greek Symbol Mystery (1980) The Swami's Ring (1981) The Kachina Doll Mystery (1981) The Twin Dilemma (1981) Captive Witness (1981) Race Against Time (1982) The Broken Anchor (1983) The Mardi Gras Mystery (1988) The Case of the Rising Stars (1988)

1990s	The Mystery of the Masked Rider (1992) The Treasure in the Royal Tower (1995) The Wedding Day Mystery (1997) The E-mail Mystery (1998)

2000s	The Legend of the Emerald Lady (2000) Mystery By Moonlight (2002) The Bike Tour Mystery (2002) The Mistletoe Mystery (2002) No Strings Attached (2003) The Riding Club Crime (2003) Danger on the Great Lakes (2003) Werewolf in a Winter Wonderland (2003)

The Nancy Drew Files

Secrets Can Kill (1986)
Stay Tuned for Danger (1987)
Death by Design (1988)
The Final Scene (1989)
The Suspect Next Door (1989)

The Nancy Drew Notebooks

The Slumber Party Secret, etc.

Nancy Drew and the Clue Crew

Sleepover Sleuths, etc.

Nancy Drew On Campus

New Lives, New Loves, etc.

Nancy Drew, Girl Detective

Without a Trace (2004)
A Race Against Time (2004)
False Notes (2004)
High Risk (2004)

Hardy Boys crossovers

Video games

Adventure series	Secrets Can Kill (1998) Stay Tuned for Danger (1999) Message in a Haunted Mansion (2000) Treasure in the Royal Tower (2001) The Final Scene (2001) Secret of the Scarlet Hand (2002) Ghost Dogs of Moon Lake (2002) The Haunted Carousel (2003) Danger on Deception Island (2003) The Secret of Shadow Ranch (2004) Curse of Blackmoor Manor (2004) Secret of the Old Clock (2005) Last Train to Blue Moon Canyon (2005) Danger By Design (2006) The Creature of Kapu Cave (2006) The White Wolf of Icicle Creek (2007) Legend of the Crystal Skull (2007) The Phantom of Venice (2008) The Haunting of Castle Malloy (2008) Ransom of the Seven Ships (2009) Warnings at Waverly Academy (2009) Trail of the Twister (2010) Secrets Can Kill Remastered (2010) Shadow at the Water's Edge (2010) The Captive Curse (2011) Alibi in Ashes (2011) Tomb of the Lost Queen (2012) The Deadly Device (2012) Ghost of Thornton Hall (2013) The Silent Spy (2013) The Shattered Medallion (2014) Labyrinth of Lies (2014) Sea of Darkness (2015)

Dossier series	Lights, Camera, Curses (2008) Resorting to Danger (2009)

Other works

Characters

Writers