3. Nerve gas. © 18Sep42; L11611. 24Aug70; R490025.
4. The seaspy strikes. © 25Sep42; L11614. 24Aug70; R490026.
5. Wireless warning. © 2Oct42; L11625. 21Sep70; R494658.
6. Flaming oil. © 9Oct42; L11626. 21Sep70; R494659.
7. Submarine signal. © 9Oct42; L11627. 21Sep70; R494660.
8. The missing key. © 23Oct42; L11651. 21Sep70; R491143.
9. The radio bomb. © 30Oct42; L11669. 21Sep70; R491144.
10. Blind bombardement. © 7Nov42; L11687. 19Oct70; R492969.
11. Ears of the enemy. © 14Nov42; L11707. 19Oct70; R492972.
12. Scourge of the Orient. © 21Nov42; L11708. 19Oct70; R492973.