No.11
Peril on the Amazon
No.12 Shark Island
No.13 
Gun for Hire
No.14 Battle of the South Seas
No.15 Pursuit of a Rebel
No.16 Quest 
for the Golden Septre
No.17 Ghost 
of the Sargasso Sea
No.18 
The House of Chang
No.19
The Deadly Three
No.20 The City beneath the Earth