The Hardy Boys Casefiles was a series of books attributed to Franklin W. Dixon, with 127 titles and three bonus titles published between 1987 and 1998. Volumes 1–93, 116, 119, and 122–24 were produced by Mega-Books of New York, Inc., whereas volumes 94–115, 117–18, 120–21, and 125–27 were produced by Mega-Books, Inc. The books were published as mass-market paperbacks by Pocket Books, a division of Simon & Schuster, under its Archway Paperbacks imprint.
1. Dead on Target (April 1987)
2. Evil, Inc. (April 1987)
3. Cult of Crime (May 1987)
4. The Lazarus Plot (June 1987)
5. Edge of Destruction (July 1987)
6. The Crowning Terror (August 1987)
7. Deathgame (September 1987)
8. See No Evil (October 1987)
9. The Genius Thieves (November 1987)
10. Hostages of Hate (December 1987)
11. Brother Against Brother (January 1988)
12. The Perfect Getaway (February 1988)
13. The Borgia Dagger (March 1988)
14. Too Many Traitors (April 1988)
15. Blood Relations (May 1988)
16. Line of Fire (June 1988)
17. The Number File (July 1988)
18. A Killing in the Market (August 1988)
19. Nightmare in Angel City (September 1988)
20. Witness to Murder (October 1988)
21. Street Spies (November 1988)
22. Double Exposure (December 1988)
23. Disaster for Hire (January 1989)
24. Scene of the Crime (February 1989)
25. The Borderline Case (March 1989)
26. Trouble in the Pipeline (April 1989)
27. Nowhere to Run (May 1989)
28. Countdown to Terror (June 1989)
29. Thick as Thieves (July 1989)
30. The Deadliest Dare (August 1989)
31. Without a Trace (September 1989)
32. Blood Money (October 1989)
33. Collision Course (November 1989)
34. Final Cut (December 1989)
35. The Dead Season (January 1990)
36. Running on Empty (February 1990)
37. Danger Zone (March 1990)
38. Diplomatic Deceit (April 1990)
39. Flesh and Blood (May 1990)
40. Fright Wave (June 1990)
41. Highway Robbery (July 1990)
42. The Last Laugh (August 1990)
43. Strategic Moves (September 1990)
44. Castle Fear (October 1990)
45. In Self-Defense (November 1990)
46. Foul Play (December 1990)
47. Flight Into Danger (January 1991)
48. Rock ‘n’ Revenge (February 1991)
49. Dirty Deeds (March 1991)
50. Power Play (April 1991)
51. Choke Hold (May 1991)
52. Uncivil War (June 1991)
53. Web of Horror (July 1991)
54. Deep Trouble (August 1991)
55. Beyond the Law (September 1991)
56. Height of Danger (October 1991)
57. Terror on Track (November 1991)
58. Spiked! (December 1991)
59. Open Season (January 1992)
60. Deadfall (February 1992)
61. Grave Danger (March 1992)
62. Final Gambit (April 1992)
63. Cold Sweat (May 1992)
64. Endangered Species: Operation Phoenix, Book One (June 1992)
65. No Mercy: Operation Phoenix, Book Two (July 1992)
66. The Phoenix Equation: Operation Phoenix, Book Three (August 1992)
67. Lethal Cargo (September 1992)
68. Rough Riding (October 1992)
69. Mayhem in Motion (November 1992)
70. Rigged for Revenge (December 1992)
71. Real Horror (January 1993)
72. Screamers (February 1993)
73. Bad Rap (March 1993)
74. Road Pirates (April 1993)
75. No Way Out (May 1993)
76. Tagged for Terror: Ring of Evil, Book One (June 1993)
77. Survival Run: Ring of Evil, Book Two (July 1993)
78. Pacific Conspiracy: Ring of Evil, Book Three (August 1993)
79. Danger Unlimited (September 1993)
80. Dead of Night (October 1993)
81. Sheer Terror (November 1993)
82. Poisoned Paradise (December 1993)
83. Toxic Revenge (January 1994)
84. False Alarm (February 1994)
85. Winner Take All (March 1994)
86. Virtual Villainy (April 1994)
87. Dead Man in Deadwood (May 1994)
88. Inferno of Fear (June 1994)
89. Darkness Falls (July 1994)
90. Deadly Engagement (August 1994)
91. Hot Wheels (September 1994)
92. Sabotage at Sea (October 1994)
93. Mission: Mayhem (November 1994)
94. A Taste for Terror (December 1994)
95. Illegal Procedure (January 1995)
96. Against all Odds (February 1995)
97. Pure Evil (March 1995)
98. Murder by Magic (April 1995)
99. Frame-Up (May 1995)
100. True Thriller (June 1995)
101. Peak of Danger (July 1995)
102. Wrong Side of the Law (August 1995)
103. Campaign of Crime (September 1995)
104. Wild Wheels (October 1995)
105. Law of the Jungle (November 1995)
106. Shock Jock (December 1995)
107. Fast Break (January 1996)
108. Blown Away (February 1996)
109. Moment of Truth (March 1996)
110. Bad Chemistry (April 1996)
111. Competitive Edge (May 1996)
112. Cliff-Hanger (June 1996)
113. Sky High (July 1996)
114. Clean Sweep (August 1996)
115. Cave Trap (September 1996)
116. Acting Up (October 1996)
117. Blood Sport (November 1996)
118. The Last Leap (December 1996)
119. The Emperor’s Shield (January 1997)
120. Survival of the Fittest (February 1997)
121. Absolute Zero (March 1997)
122. River Rats (April 1997)
123. High-Wire Act (May 1997)
124. The Viking’s Revenge (July 1997)
125. Stress Point (September 1997)
126. Fire in the Sky (November 1997)
127. Dead in the Water (January 1998)
The Hardy Boys Casefiles Collector’s Edition: Diplomatic Deceit, Flesh and Blood, Fright Wave (May 1998)
The Hardy Boys Casefiles Collector’s Edition: Rock ‘n’ Revenge, Choke Hold, Uncivil War (September 1998)
The Hardy Boys Casefiles Collector’s Edition: Beyond the Law, Spiked!, Open Season (December 1998)