It's a mystery to me.
1. 
Egypt's Fire (The Curious League of Detectives and Thieves #1)
by:
Tom Phillips
3.95 avg rating — 615 ratings 2. 
The Bungalow Mystery (Nancy Drew Mystery Stories, #3)
by:
Carolyn Keene
3.95 avg rating — 26,297 ratings 3. 
The Mystery at Lilac Inn (Nancy Drew Mystery Stories, #4)
by:
Carolyn Keene
3.98 avg rating — 24,668 ratings 
5. 
The Ghost of Old Central School: A Choose Your Path Mystery
by:
Deb Mercier
4.75 avg rating — 8 ratings 6. 
The Mysterious Benedict Society (The Mysterious Benedict Society, #1) 4.20 avg rating — 171,890 ratings
8. 
Mary Anne's Bad-Luck Mystery (The Baby-Sitters Club, #17)
by:
Ann M. Martin
3.76 avg rating — 3,570 ratings 9. 
Claudia and the Middle School Mystery (The Baby-Sitters Club, #40)
by:
Ann M. Martin
3.79 avg rating — 1,795 ratings 10. 
The Mysterious Mannequin (Nancy Drew Mystery Stories, #47)
by:
Carolyn Keene
3.93 avg rating — 5,639 ratings 11. 
The Mystery of the Fire Dragon (Nancy Drew Mystery Stories, #38)
by:
Carolyn Keene
3.98 avg rating — 5,585 ratings 12. 
The Scarlet Slipper Mystery (Nancy Drew Mystery Stories, #32)
by:
Carolyn Keene
3.92 avg rating — 7,139 ratings 13. 
The Mystery of the Ivory Charm (Nancy Drew Mystery Stories, #13)
by:
Carolyn Keene
3.85 avg rating — 8,797 ratings 
16. 
Mystery of Crocodile Island (Nancy Drew Mystery Stories, #55)
by:
Carolyn Keene
3.84 avg rating — 4,324 ratings 16. 
The Mysterious Affair at Styles (Hercule Poirot, #1)
by:
Agatha Christie
really liked it 4.00 avg rating — 484,732 ratings 18. 
Mystery of the Glowing Eye (Nancy Drew Mystery Stories, #51)
by:
Carolyn Keene
3.89 avg rating — 4,198 ratings 19. 
Mystery of the Tolling Bell (Nancy Drew Mystery Stories, #23)
by:
Carolyn Keene
3.91 avg rating — 6,492 ratings 
21. 
The Mystery of the Brass-Bound Trunk (Nancy Drew Mystery Stories, #17)
by:
Carolyn Keene
3.90 avg rating — 6,571 ratings 
23. 
The Resurrection of the Romanovs: Anastasia, Anna Anderson, and the World's Greatest Royal Mystery
by:
Greg King
4.02 avg rating — 602 ratings 
23. 
Egypt's Fire (The Curious League of Detectives and Thieves, #1)
by:
Tom Phillips
3.95 avg rating — 615 ratings 
33. 
The Case of the Jingle Bell Jinx (The New Adventures of Mary-Kate & Ashley, #26)
by:
Alice Leonhardt
3.70 avg rating — 184 ratings 33. 
Twenty Five Mystery Science Theater 3000 Films That Changed My Life In No Way Whatsoever
by:
Frank Conniff
3.81 avg rating — 468 ratings 
40. 
Blockbuster! Fergus Hume and The Mystery of a Hansom Cab
by:
Lucy Sussex
3.89 avg rating — 47 ratings 
40. 
The Case of the Flying Phantom (The New Adventures of Mary-Kate & Ashley, #18)
by:
Melinda Metz
3.66 avg rating — 152 ratings 40. 
The Mystery Science Theater 3000 Amazing Colossal Episode Guide
by:
Trace Beaulieu
4.39 avg rating — 974 ratings 
40. 
Beyond Coincidence: Amazing Stories of Coincidence and the Mystery Behind Them
by:
Martin Plimmer
3.43 avg rating — 279 ratings 
47. 
The Case of the Rock Star's Secret (The New Adventures of Mary-Kate & Ashley, #16)
by:
Melinda Metz
3.82 avg rating — 245 ratings 
47. 
47. 
The Less People Know About Us: A Mystery of Betrayal, Family Secrets, and Stolen Identity 3.89 avg rating — 9,086 ratings
54. 
The Case of the Hollywood Who-Done-It (The New Adventures of Mary-Kate & Ashley, #33)
by:
Melinda Metz
3.83 avg rating — 169 ratings 54. 
Empty Mansions: The Mysterious Life of Huguette Clark and the Spending of a Great American Fortune
by:
Bill Dedman
3.80 avg rating — 39,199 ratings 
54. 
The Ghosts of Leadville: A Paranormal Mystery
by:
D.E. Morley
really liked it 4.00 avg rating — 1 rating 
60. 
The Case of the Slam Dunk Mystery (The New Adventures of Mary-Kate & Ashley, #15) 3.70 avg rating — 203 ratings
60. 
Tracking the Vanishing Frogs: An Ecological Mystery
by:
Kathryn Phillips
4.15 avg rating — 53 ratings 
66. 
The Case of the Candy Cane Clue (The New Adventures of Mary-Kate & Ashley, #32)
by:
Judy Katschke
3.88 avg rating — 193 ratings 
66. 
The Billionaire's Vinegar: The Mystery of the World's Most Expensive Bottle of Wine
by:
Benjamin Wallace
3.56 avg rating — 8,152 ratings 
71. 
The Case of the Mall Mystery (The New Adventures of Mary-Kate & Ashley, #28)
by:
Alice Leonhardt
3.74 avg rating — 176 ratings 71. 
Terracotta Warriors: History, Mystery and the Latest Discoveries
by:
Edward Burman
3.71 avg rating — 93 ratings 
71. 
The Best American Mystery Stories 2020 (The Best American Series)
by:
C.J. Box
3.92 avg rating — 1,065 ratings 
77. 
The Case of the Rock & Roll Mystery (The New Adventures of Mary-Kate & Ashley, #6)
by:
Lisa Eisenberg
3.61 avg rating — 188 ratings 77. 
The Secret Plot to Save the Tsar: The Truth Behind the Romanov Mystery
by:
Shay McNeal
3.51 avg rating — 197 ratings 
77. 
Time Bomb And Other Stories of Mystery and Suspense
by:
Peggy Doherty
really liked it 4.00 avg rating — 10 ratings 77. 
Last Scene Alive (Aurora Teagarden Mystery, #7)
by:
Charlaine Harris
3.86 avg rating — 16,625 ratings 77. 
The Mystery of the Flying Skeleton (A Power Boys Adventure, #2)
by:
Mel Lyle
3.03 avg rating — 29 ratings 83. 
The Case of Camp Pom-pom (The New Adventures of Mary Kate and Ashley, #36) 3.85 avg rating — 210 ratings
83. 
87. 
The Case of the Cheerleading Camp Mystery (The New Adventures of Mary-Kate & Ashley, #17)
by:
Lisa Fiedler
3.78 avg rating — 406 ratings 
87. 
The Other Worlds: 25 Modern Stories of Mystery and Imagination
by:
Phil Stong
3.62 avg rating — 8 ratings 
91. 
The Case of the Golden Slipper (The New Adventures of Mary Kate & Ashley, #20)
by:
Melinda Metz
3.80 avg rating — 230 ratings 
91. 
96. 
Rhoda Broughton's Ghost Stories and Other Tales of Mystery and Suspense
by:
Rhoda Broughton
3.25 avg rating — 12 ratings 96. 
96. 
The Siamese Twin Mystery (Ellery Queen Detective, #7)
by:
Ellery Queen
3.63 avg rating — 1,471 ratings 100. 
Mystery at the Ski Jump (Nancy Drew Mystery Stories, #29)
by:
Carolyn Keene
3.88 avg rating — 5,794 ratings