Biggles' Combined Operation oleh Capt. W.E. Johns

When a dangerous drug ring targeting kids is uncovered, Biggles springs into action. Teaming up with American agent Eddie Ross and French captain Marcel Brissac, Biggles launches an international investigation to track down the criminals. Following clues across Europe, the detectives eventually locate the drug ring's secret base. Outnumbered but determined, Biggles and his allies devise a risky plan to infiltrate the base...