Inspector Gaskin
Inspector Gaskin appears in 13 books:- Biggles Air Ace
- Biggles Works It Out
- Biggles Follows On
- Biggles Air Detective
- Biggles Chinese Puzzle
- Biggles on the Home Front
- Biggles Presses On
- Biggles and the Poor Rich Boy
- Biggles Takes It Rough
- Biggles and the Black Mask
- Biggles and the Plot That Failed
- Biggles Scores a Bull
- Biggles and the Noble Lord
