| # | Book Title | Author | |
|---|---|---|---|
| 1 | Escape from Blood Castle | Tyler, Jenny | |
| 2 | Curse of the Lost Idol | Waters, Gaby | |
| 3 | Murder on the Midnight Plane | Round, Graham | |
| 4 | Incredible Dinosaur Expedition, The | Dolby, Karen | |
| 5 | Intergalactic Bus Trip, The | Oliver, Martin | |
| 6 | Time Train to Ancient Rome, The | Waters, Gaby | |
| 7 | Danger at Demon's Cove | Dolby, Karen | |
| 8 | Agent Arthur's Jungle Journey | Oliver, Martin | |
| 9 | Agent Arthur on the Stormy Seas | Waters, Gaby | |
| 10 | Ghost in the Mirror, The | Dolby, Karen | |
| 11 | Haunted Tower, The | Waters, Gaby | |
| 12 | Agent Arthur's Artic Adventure | Oliver, Martin | |
| 13 | Vanishing Village, The | Dixon, Sarah | |
| 14 | Search for the Sunken City | Oliver, Martin | |
| 15 | Journey to the Lost Temple | Leigh, Susannah | |
| 16 | Pyramid Plot, The | Somper, Justin | |
| 17 | Invisible Spy, The | Fowler, Mark | |
| 18 | Emerald Conspiracy, The | Fowler, Mark | |
| 19 | Agent Arthur's Desert Challenge | Oliver, Martin | |
| 20 | Voyage to the Edge of the World | Sims, Lesley | |
| 21 | Mutiny at Crossbones Bay | Everett, Felicity | |
| 22 | Castle of Intrigue | Stewart, Paul | |
| 23 | Dark, Dark Knight | Waters, Gaby |