114 books in series

The Hardy Boys

The Hardy Boys is a 114-book series with 113 primary works first released in 1920 with contributions by Franklin W. Dixon, Jerrold Mundis, and Leslie H. Morrill.

The Tower Treasure
#1Popular

1927 • 39 Readers • 214 pages • 3.5

The House on the Cliff
#2

1927 • 19 Readers • 138 pages • 3.5

Cover 7

The Secret of the Old Mill

#3

1927 • 3 Readers • 3

The Missing Chums
#4

1928 • 8 Readers • 192 pages • 3

Hunting for hidden gold
#5First

1920 • 13 Readers • 194 pages • 3.6

The Shore Road Mystery
#6

1928 • 11 Readers • 192 pages • 3

The Secret of the Caves
#7

1929 • 4 Readers • 175 pages • 3

Mystery of Cabin Island
#8

1929 • 5 Readers • 160 pages • 3

The great airport mystery
#9

1930 • 6 Readers • 158 pages • 3

What Happened at Midnight
#10

1931 • 9 Readers • 158 pages • 3.5

While the Clock Ticked
#11

1932 • 8 Readers • 174 pages • 3.6

Footprints under the window
#12

1933 • 4 Readers • 157 pages • 3

The Mark on the Door
#13

1934 • 4 Readers • 192 pages • 3

The Hidden Harbor Mystery
#14

1935 • 5 Readers • 3

The Sinister Sign Post
#15

1936 • 5 Readers • 175 pages • 3.3

A Figure in Hiding (Hardy Boys, #16)
#16

1937 • 4 Readers • 228 pages • 3

The Secret Warning
#17

1938 • 5 Readers • 192 pages • 3

The Twisted Claw
#18

1939 • 10 Readers • 159 pages • 3.6

The mystery of the disappearing floor.
#19

1940 • 8 Readers • 159 pages • 3.4

Mystery of the Flying Express
#20

1941 • 5 Readers • 193 pages • 3

The clue of the broken blade
#21

1942 • 5 Readers • 192 pages • 3

The flickering torch mystery
#22

1943 • 6 Readers • 160 pages • 3.3

The Short-Wave Mystery
#24

1945 • 4 Readers • 192 pages • 3

The Secret Panel
#25

1946 • 7 Readers • 178 pages • 3.3

The Phantom Freighter
#26

1947 • 4 Readers • 181 pages • 3

The Secret of Skull Mountain
#27

1948 • 5 Readers • 192 pages • 3

The sign of the crooked arrow
#28

1949 • 4 Readers • 160 pages • 3

The Wailing Siren Mystery
#30

1951 • 4 Readers • 177 pages • 3

The Secret of Wildcat Swamp
#31

1952 • 5 Readers • 160 pages • 3

The Crisscross Shadow
#32

1953 • 5 Readers • 156 pages • 3.3

The Yellow Feather Mystery
#33

1953 • 5 Readers • 181 pages • 3

The Clue in the Embers
#35

1955 • 5 Readers • 214 pages • 3

The Secret of Pirates' Hill
#36

1956 • 6 Readers • 178 pages • 3.3

The Ghost at Skeleton Rock
#37

1957 • 5 Readers • 177 pages • 3.3

Mystery at Devil's Paw
#38

1959 • 4 Readers • 193 pages • 3

The mystery of the Chinese junk
#39

1959 • 4 Readers • 160 pages • 3

Mystery of the Desert Giant
#40

1960 • 6 Readers • 160 pages • 3.5

The Viking Symbol Mystery
#42

1962 • 4 Readers • 192 pages • 3

The Mystery of the Aztec Warrior
#43

1964 • 6 Readers • 192 pages • 3.7

The mystery of the spiral bridge
#45

1965 • 4 Readers • 160 pages • 3

The hooded hawk mystery
#46

1967 • 5 Readers • 320 pages • 3

Mystery of the Whale Tattoo
#47

1967 • 4 Readers • 192 pages • 3

The Arctic patrol mystery.
#48

1969 • 5 Readers • 159 pages • 3.3

The Bombay Boomerang
#49

1970 • 3 Readers • 192 pages • 3

Danger on Vampire Trail
#50

1971 • 4 Readers • 192 pages • 3.3

Masked Monkey
#51

1972 • 4 Readers • 153 pages • 3

The Shattered Helmet
#52

1973 • 5 Readers • 180 pages • 3.5

The Clue of the Hissing Serpent
#53

1974 • 4 Readers • 192 pages • 3

The Mysterious Caravan
#54

1975 • 5 Readers • 193 pages • 3.3

The Witchmaster's Key
#55

1975 • 3 Readers • 192 pages • 3

The Jungle Pyramid
#56

1976 • 3 Readers • 180 pages • 3

The Firebird Rocket
#57

1978 • 5 Readers • 192 pages • 3

The Sting of the Scorpion
#58

1978 • 3 Readers • 180 pages • 3

Mystery of the Samurai Sword
#60

1979 • 3 Readers • 192 pages • 3

El espia del Pentagono
#61

1980 • 2 Readers • 174 pages • 3

The Apeman's Secret
#62

1980 • 3 Readers • 184 pages • 3

The Mummy Case
#63

1980 • 3 Readers • 192 pages • 3

Mystery of Smugglers Cove
#64

1980 • 3 Readers • 181 pages • 3

The Stone Idol
#65

1981 • 2 Readers • 192 pages • 3

The Vanishing Thieves
#66

1980 • 2 Readers • 179 pages • 3

The Outlaw's Silver
#67

1981 • 1 Reader • 190 pages • 3

The submarine caper
#68

1981 • 1 Reader • 3

Cover 3

The Four-Headed Dragon

#69

1981 • 2 Readers • 3.5

The Infinity Clue
#70

1981 • 1 Reader • 160 pages • 3

Track of the Zombie
#71

1982 • 1 Reader • 194 pages • 3

The Voodoo Plot
#72

1982 • 2 Readers • 189 pages • 4

The Billion Dollar Ransom
#73

1982 • 1 Reader • 189 pages • 3

Tic-Tac-Terror
#74

1984 • 1 Reader • 201 pages • 3

Trapped at Sea
#75

1982 • 1 Reader • 181 pages • 3

Game Plan for Disaster
#76

1982 • 1 Reader • 3

The Crimson Flame
#77

1981 • 2 Readers • 190 pages • 3.5

Cave-In
#78

1983 • 2 Readers • 3.5

Sky Sabotage
#79

1983 • 1 Reader • 160 pages • 3

The roaring river mystery
#80

1984 • 1 Reader • 189 pages • 3

Demon's Den
#81

1984 • 1 Reader • 200 pages • 3

The Blackwing Puzzle
#82

1984 • 1 Reader • 212 pages • 3

The Swamp Monster
#83

1985 • 1 Reader • 192 pages • 3

Revenge Of The Desert Phantom
#84

1985 • 1 Reader • 3

The Skyfire puzzle
#85

1985 • 1 Reader • 158 pages • 3

The Mystery of the Silver Star
#86

1987 • 1 Reader • 151 pages • 3

The Hardy Boys Program for Destruction
#87

1987 • 1 Reader • 152 pages • 3

Tricky Business
#88

1988 • 1 Reader • 160 pages • 3

Sky Blue Frame
#89

1988 • 1 Reader • 154 pages • 3

Danger on the Diamond
#90

1993 • 1 Reader • 148 pages • 3

Shield of Fear
#91

1988 • 1 Reader • 153 pages • 3

The Shadow Killers
#92

1988 • 1 Reader • 154 pages • 3

The Serpent's Tooth Mystery
#93

1988 • 1 Reader • 10 pages • 3

Breakdown in Axeblade
#94

1989 • 1 Reader • 150 pages • 3

Wipeout
#96

1989 • 1 Reader • 149 pages • 3

Cast of Criminals
#97

1989 • 1 Reader • 152 pages • 3

Terminal Shock
#102

1990 • 160 pages

Three-Ring Terror
#111

1991 • 164 pages

High Speed Showdown
#137

1996 • 1 Reader • 162 pages

The Alaskan Adventure
#138

1996 • 1 Reader

Lost in Gator Swamp
#142

1997 • 164 pages

The Secret of Skeleton Reef
#144

1997 • 1 Reader

Cover 3

The Crisscross Crime

#150

1998 • 1 Reader

Cover 2

Danger in the Extreme

#152

1998 • 1 Reader

The Caribbean Cruise Caper
#154

1999 • 164 pages

Cover 2

The Lure of the Italian Treasure

#157

1999 • 1 Reader

Training for Trouble
#161

2000 • 1 Reader • 147 pages • 3

The End of the Trail
#162

2000 • 1 Reader • 131 pages • 3

Skin & Bones
#164

2000 • 1 Reader • 148 pages • 4

Crime in the Cards
#165

2001 • 1 Reader • 147 pages • 4

Past and Present Danger
#166

2001 • 1 Reader • 149 pages • 2

Trick-or-Trouble
#175

2002 • 1 Reader • 160 pages

In Plane Sight
#176

2002 • 2 Readers • 160 pages • 4

The Case of the Psychic's Vision
#177

2003 • 1 Reader

The Mystery of the Black Rhino
#178

2003 • 1 Reader • 160 pages • 3

Cover 8

Passport to Danger

#179

2003 • 1 Reader

The Secret of the Soldier's Gold
#182

2003 • 1 Reader • 164 pages • 4

Cover 5

The Dangerous Transmission

#184

2004 • 1 Reader • 4

Motocross Madness
#190

2005 • 1 Reader • 160 pages • 4

Cover 1

Hardy Boys, 4 Volumes Boxed Set

1987 • 1 Reader