1
The Tower Treasure Jun-1927 5
2
The House on the Cliff 1927 5
3
The Secret of the Old Mill 1927 5
4
The Missing Chums 1928 5
5
Hunting for Hidden Gold 1928 5
6
The Shore Road Mystery 1928 5
7
The Secret of the Caves 1929 5
8
The Mystery of Cabin Island 1929 5
9
The Great Airport Mystery 1930 5
10
What Happened at Midnight 1931 5
11
While the Clock Ticked 1932 4
12
The Footprints Under the Window 1933 4
13
The Mark on the Door 1934 4
14
The Hidden Harbor Mystery 1935 5
15
The Sinister Signpost 1936 5
16
A Figure in Hiding 1937 5
17
Secret Warning 1938 5
18
Twisted Claw 1939 5
19
The Disappearing Floor 1940 5
20
The Mystery of the Flying Express 1941 5
21
The Clue of the Broken Blade 1942 4
22
The Flickering Torch Mystery 1943 5
23
The Melted Coins 1944 5
24
The Short-Wave Mystery 1945 5
25
The Secret Panel 1946 5
26
The Phantom Freighter 1947 5
27
The Secret of Skull Mountain 1948 5
28
The Sign of the Crooked Arrow 1949 5
29
The Secret of the Lost Tunnel 1950 5
30
The Wailing Siren Mystery 1951 5
31
The Secret of Wildcat Swamp 1952 5
32
The Crisscross Shadow 1953 5
33
The Yellow Feather Mystery 1953 5
34
The Hooded Hawk Mystery 1954 5
35
The Clue in the Embers 1955 5
36
The Secret of Pirate's Hill 1956 5
37
The Ghost at Skeleton Rock 1957 5
38
The Mystery at Devil's Paw 1959 5
39
The Mystery of the Chinese Junk 1960 5
40
Mystery of the Desert Giant 1961 4
41
The Clue of the Screeching Owl 1962 5
42
The Viking Symbol Mystery 1963 4
43
The Mystery of the Aztec Warrior 1964 5
44
The Haunted Fort 1965 5
45
The Mystery of the Spiral Bridge 1966 5
46
The Secret Agent on Flight 101 1967 5
47
Mystery of the Whale Tattoo 1968 5
48
The Arctic Patrol Mystery 1969 5
49
The Bombay Boomerang 1970 5
50
Danger on Vampire Trail 1971 5
51
The Masked Monkey 1972 4
52
The Shattered Helmet 1973 4
53
The Clue of the Hissing Serpent 1974 5
54
The Mysterious Caravan 1975 5
55
The Witchmaster's Key 1976 4
56
The Jungle Pyramid 1977 5
57
The Firebird Rocket 1978 5
58
The Sting of the Scorpion 1979 5
59
Night of the Werewolf Nov-1979 5
60
Mystery of the Samurai Sword Nov-1979 0
61
The Pentagon Spy May-1980 5
62
The Apeman's Secret May-1980 0
63
The Mummy Case Nov-1980 0
64
Mystery of Smuggler's Cove Nov-1980 5
65
The Stone Idol Aug-1981 5
66
The Vanishing Thieves Aug-1981 5
67
The Outlaw's Silver Jun-1981 0
68
The Submarine Caper // Deadly Chase Nov-1981 0
69
The Four-Headed Dragon Nov-1981 0
70
The Infinity Clue Nov-1981 0
71
Track of the Zombie Jan-1982 0
72
The Voodoo Plot Jun-1982 0
73
The Billion Dollar Ransom Jun-1982 0
74
Tic-Tac-Terror Jun-1982 0
75
Trapped at Sea Jan-1983 0
76
Game Plan for Disaster Jan-1983 0
77
The Crimson Flame Jan-1983 0
78
Cave-In! Sep-1983 0
79
Sky Sabotage Sep-1983 0
80
The Roaring River Mystery May-1984 0
81
The Demon's Den Nov-1984 0
82
The Blackwing Puzzle Nov-1984 0
83
The Swamp Monster Jun-1985 0
84
Revenge of the Desert Phantom Nov-1985 0
85
The Skyfire Puzzle Nov-1985 0
86
The Mystery of the Silver Star Sep-1987 0
87
Program for Destruction Nov-1987 0
88
Tricky Business Jan-1988 0
89
The Sky Blue Frame Mar-1988 0
90
Danger on the Diamond May-1988 4
91
Shield of Fear Jul-1988 0
92
The Shadow Killers Sep-1988 4
93
The Serpent's Tooth Mystery Dec-1988 0
94
Breakdown in Axeblade Feb-1989 0
95
Danger on the Air Mar-1989 5
96
Wipeout Jun-1989 3
97
Cast of Criminals Aug-1989 0
98
Spark of Suspicion Sep-1989 0
99
Dungeon of Doom Nov-1989 0
100
The Secret of the Island Treasure Feb-1990 0
101
The Money Hunt Apr-1990 0
102
Terminal Shock Jun-1990 0
103
The Million-Dollar Nightmare Aug-1990 0
104
Tricks of the Trade Oct-1990 0
105
The Smoke Screen Mystery Dec-1990 0
106
Attack of the Video Villains Feb-1991 0
107
Panic on Gull Island Apr-1991 0
108
Fear on Wheels Jun-1991 0
109
The Prime-Time Crime Aug-1991 0
110
The Secret of Sigma Seven Oct-1991 0
111
Three-Ring Terror Dec-1991 0
112
The Demolition Mission Feb-1992 0
113
Radical Moves Apr-1992 0
114
The Case of the Counterfeit Criminals Jun-1992 0
115
Sabotage at Sports City Aug-1992 0
116
Rock 'n' Roll Renegades Sep-1992 0
117
The Baseball Card Conspiracy Dec-1992 0
118
Danger in the Fourth Dimension Feb-1993 0
119
Trouble at Coyote Canyon Apr-1993 0
120
The Case of the Cosmic Kidnapping Jun-1993 0
121
The Mystery in the Old Mine Aug-1993 0
122
Carnival of Crime Sep-1993 0
123
The Robot's Revenge Dec-1993 0
124
Mystery With a Dangerous Beat Feb-1994 0
125
Mystery on Makatunk Island Apr-1994 0
126
Racing to Disaster Jul-1994 0
127
Reel Thrills Jun-1994 0
128
Day of the Dinosaur Aug-1994 0
129
The Treasure at Dolphin Bay Dec-1994 0
130
Sidetracked to Danger Feb-1995 0
131
Crusade of the Flaming Sword Apr-1995 0
132
Maximum Challenge Jun-1995 0
133
Crime in the Kennel Aug-1995 4
134
Cross Country Crime Oct-1995 0
135
The Hypersonic Secret Dec-1995 0
136
The Cold Cash Caper Apr-1996 0
137
High-Speed Showdown Apr-1996 0
138
The Alaskan Adventure Jun-1996 0
139
The Search for the Snow Leopard Aug-1996 0
140
Slam Dunk Sabotage Oct-1996 5
141
The Desert Thieves Dec-1996 0
142
Lost in Gator Swamp Feb-1997 0
143
The Giant Rat of Sumatra Apr-1997 0
144
The Secret of Skeleton Reef Jun-1997 0
145
Terror at High Tide Aug-1997 0
146
The Mark of the Blue Tattoo Oct-1997 0
147
Trial and Terror Dec-1997 0
148
The Ice Cold Case Feb-1998 0
149
The Chase for the Mystery Twister Apr-1998 0
150
The Crisscross Crime Jun-1998 0
151
Rocky Road to Revenge Aug-1998 0
152
Danger in the Extreme Oct-1998 0
153
Eye on Crime Nov-1998 0
154
The Caribbean Cruise Caper Jan-1999 0
155
The Hunt for the Four Brothers Mar-1999 3
156
A Will to Survive May-1999 5
157
The Lure of the Italian Treasure Jul-1999 0
158
The London Deception Sep-1999 0
159
Daredevils Jan-2000 0
160
A Game Called Chaos Mar-2000 0
161
Training for Trouble May-2000 0
162
The End of the Trail Jul-2000 0
163
The Spy That Never Lies Sep-2000 0
164
Skin & Bones Nov-2000 0
165
Crime in the Cards Sep-2001 0
166
Past and Present Danger Apr-2001 0
167
Trouble Times Two May-2001 0
168
The Castle Conundrum Jul-2001 0
169
Ghost of a Chance Sep-2001 0
170
Kickoff to Danger Nov-2001 0
171
The Test Case Jan-2002 0
172
Trouble in Warp Space Dec-2002 0
173
Speed Times Five Jul-2002 0
174
Hide and Sneak Sep-2002 0
175
Trick-or-Trouble Aug-2002 4
176
In Plane Sight Dec-2002 5
177
The Case of the Psychic's Vision Feb-2003 0
178
The Mystery of the Black Rhino Mar-2003 0
179
Passport to Danger Jun-2003 4.5
180
Typhoon Island Aug-2003 0
181
Double Jeopardy Oct-2003 0
182
The Secret of the Soldier's Gold Dec-2003 0
183
Warehouse Rumble Feb-2004 0
184
The Dangerous Transmission Apr-2004 4
185
Wreck and Roll May-2004 0
186
Hidden Mountain Jul-2004 4
187
No Way Out Oct-2004 0
188
Farming Fear Dec-2004 0
189
One False Step Feb-2005 5
190
Motocross Madness Apr-2005 0
Hardy Boys Ghost Stories Mar-1984 3.5
