Helen Moss
- Time Dogs: Balto and the Race Against Time
- Time Dogs: Seaman and the Great Northern Adventure
- Time Dogs: Seaman and the Great Northern Adventure
- Time Dogs: Balto and the Race Against Time
- The Mystery of the Cursed Ruby
- The Mystery of the Drowning Man
- The Mystery of the Dinosaur Discovery
- The Mystery of the Smugglers' Wreck
- The Mystery of the Vanishing Skeleton
- The Mystery of the Invisible Spy
- The Phoenix Code
- Time Dogs: Barry and the Great Mountain Rescue