| # | Book Title | Author | |
|---|---|---|---|
| 1 | Mystery at Big Ben, The | Marsh, Carole | |
| 2 | Mystery at the Eiffel Tower, The | Marsh, Carole | |
| 3 | Mystery at the Roman Colosseum, The | Marsh, Carole | |
| 4 | Mystery of the Ancient Pyramid, The | Marsh, Carole | |
| 5 | Mystery on the Great Wall of China, The | Marsh, Carole | |
| 6 | Mystery on the Great Barrier Reef, The | Marsh, Carole | |
| 7 | Mystery at the Imperial Palace, The | Marsh, Carole | |
| 8 | Mystery in the Amazon Rainforest, The | Marsh, Carole | |
| 9 | Mystery at Dracula's Castle, The | Marsh, Carole | |
| 10 | Curse of the Ancient Acropolis, The | Marsh, Carole | |
| 11 | Mystery of the Crystal Castle, The | Marsh, Carole | |
| 12 | Mystery in Icy Antarctica, The | Marsh, Carole | |
| 13 | Rip-Roaring Mystery on the African Safari, The | Marsh, Carole | |
| 14 | Breathtaking Mystery on Mt. Everest, The | Marsh, Carole | |
| 15 | Mystery of the Onion Domes, The | Marsh, Carole | |
| 16 | Mystery at the Mayan Ruins, The | Marsh, Carole | |
| 17 | Mystery of the Northern Lights, The | Marsh, Carole | |
| 18 | Mystery of the Taj Mahal, The | Marsh, Carole | |
| 19 | Mystery at Machu Picchu, The | Marsh, Carole |