Capt. W.E. Johns 
Orchids for Biggles [EPUB ebook] 

Top secret documents missing and with them a nuclear research scientist demanding one million dollars for the return of the papers which in enemy hands could only mean annihilation. Trying to track down Harald Neckel in the depths of the Peruvian jungle, Biggles agreed with Bertie that they were indeed ‘Up the creek without a paddle’, and Bertie’s argument with a giant anaconda was by no means their closest brush with death.