| Title | ISBN |
| A TO Z MYSTERIES THE GOOSE'S GOLD | 0-439-28730-8 |
| A TO Z MYSTERIES THE YELLOW YACHT | 0-439-78552-9 |
| A TO Z MYSTERIES THE ZOMBIE ZONE | 0-439-78553-7 |
| A TO Z MYSTERIES THE RUNAWAY RACEHORSE | 0-439-44476-4 |
| A TO Z MYSTERIES THE DEADLY DUNGEON | 0-590-81922-4 |
| A TO Z MYSTERIES THE EMPTY ENVELOPE | 0-439-05202-5 |
| A TO Z MYSTERIES THE HAUNTED HOTEL | 0-439-28301-9 |
| A TO Z MYSTERIES THE JAGUAR'S JEWEL | 0-439-32683-4 |
| A TO Z MYSTERIES THE JAGUAR'S JEWEL | 0-545-08536-1 |
| A TO Z MYSTERIES THE KIDNAPPED KING | 0-4390=-32684-2 |
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