| The Mystery of the Missing Necklace
Blyton Enid | |
| The mystery of the Peacock's Eye
Brian Flynn | |
| The Mystery of the Pinckney Draught
Charles C. Nott | |
| The Mystery of the Ravenspurs / A Romance and Detective Story of Thibet and England
Fred M. White | |
| The Mystery of the Sea
Bram Stoker | |
| The mystery of the Sea-Lark
Ralph Henry Barbour; H. P. Holt | |
| The Mystery of the Secret Band
Edith Lavell | |
| The Mystery of the Secret Room
Blyton Enid | |
| The Mystery of the Spiteful Letters
Blyton Enid | |
| The Mystery of the Sycamore
Carolyn Wells |
