| # | Book Title | Author | |
|---|---|---|---|
| 1 | Mystery of the White Elephant, The | Murphy, Elspeth Campbell | |
| 2 | Mystery of the Silent Nighingale, The | Murphy, Elspeth Campbell | |
| 3 | Mystery of the Wrong Dog, The | Murphy, Elspeth Campbell | |
| 4 | Mystery of the Dancing Angels, The | Murphy, Elspeth Campbell | |
| 5 | Mystery of the Hobo's Treasure, The | Murphy, Elspeth Campbell | |
| 6 | Mystery of the Magi's Treasure, The | Murphy, Elspeth Campbell | |
| 7 | Mystery of the Haunted Lighthouse, The | Murphy, Elspeth Campbell | |
| 8 | Mystery of the Dolphins Detective, The | Murphy, Elspeth Campbell | |
| 9 | Mystery of the Eagle Feather, The | Murphy, Elspeth Campbell | |
| 10 | Mystery of the Silly Goose, The | Murphy, Elspeth Campbell | |
| 11 | Mystery of the Copycat Clown, The | Murphy, Elspeth Campbell | |
| 12 | Mystery of the Honeybees' Secret, The | Murphy, Elspeth Campbell | |
| 13 | Mystery of the Gigerbread House, The | Murphy, Elspeth Campbell | |
| 14 | Mystery of the Zoo Camp, The | Murphy, Elspeth Campbell | |
| 15 | Mystery of the Goldfish Pond, The | Murphy, Elspeth Campbell | |
| 16 | Mystery of the Traveling Button, The | Murphy, Elspeth Campbell | |
| 17 | Mystery of the Birthday Party, The | Murphy, Elspeth Campbell | |
| 18 | Mystery of the Lost Island, The | Murphy, Elspeth Campbell | |
| 19 | Mystery of the Wedding Cake, The | Murphy, Elspeth Campbell | |
| 20 | Mystery of the Sand Castle, The | Murphy, Elspeth Campbell | |
| 21 | Mystery of the Sock Monkeys, The | Murphy, Elspeth Campbell | |
| 22 | Mystery of the African Gray, The | Murphy, Elspeth Campbell | |
| 23 | Mystery of the Butterfly Garden, The | Murphy, Elspeth Campbell | |
| 24 | Mystery of the Book Fair, The | Murphy, Elspeth Campbell | |
| 25 | Mystery of the Coon Cat, The | Murphy, Elspeth Campbell | |
| 26 | Mystery of the Runaway Scarecrow, The | Murphy, Elspeth Campbell | |
| 27 | Mystery of the Attic Lion, The | Murphy, Elspeth Campbell | |
| 28 | Mystery of the Backdoor Bundle, The | Murphy, Elspeth Campbell | |
| 29 | Mystery of the Painted Snake, The | Murphy, Elspeth Campbell | |
| 30 | Mystery of the Golden Reindeer, The | Murphy, Elspeth Campbell |