Series: Trixie Belden
The secret of the mansion (Volume 1.)
The red trailer mystery (Volume 2.)
The gatehouse mystery (Volume 3.)
The mysterious visitor (Volume 4.)
The mystery off Glen Road (Volume 5.)
The mystery in Arizona (Volume 6.)
The mysterious code (Volume 7.)
The black jacket mystery (Volume 8.)
The Happy Valley mystery (Volume 9.)
The marshland mystery (Volume 10.)
The mystery at Bob-White Cave (Volume 11.)
The mystery of the blinking eye (Volume 12.)
The mystery on Cobbett's Island (Volume 13.)
The mystery of the emeralds (Volume 14.)
The mystery on the Mississippi (Volume 15.)
The mystery of the missing heiress (Volume 16.)
The mystery of the uninvited guest (Volume 17.)
The mystery of the phantom grasshopper (Volume 18.)
The secret of the unseen treasure (Volume 19.)
The mystery off Old Telegraph Road (Volume 20.)
The mystery of the castaway children (Volume 21.)
The mystery on Mead's Mountain (Volume 22.)
The mystery of the queen's necklace (Volume 23.)
The mystery at Saratogae (Volume 24.)
The Sasquatch mystery (Volume 25.)
The mystery of the headless horseman (Volume 26.)
The mystery of the ghostly galleon (Volume 27.)
The Hudson River mystery (Volume 28.)
The mystery of the velvet gown (Volume 29.)
The mystery of the midnight marauder (Volume 30.)
The mystery at Maypenny's (Volume 31.)
The mystery of the whispering witch (Volume 32.)
The mystery of the vanishing victim (Volume 33.)
The mystery of the missing millionaire (Volume 34.)
The mystery of the Memorial Day fire (Volume 35.)
The mystery of the antique doll (Volume 36.)
The pet show mystery (Volume 37.)
The Indian burial ground mystery (Volume 38.)
The mystery of the galloping ghost (Volume 39.)