W. E. Johns 
Return to Mars [EPUB ebook] 

Tiger Clinton, Rex and the Professor are back! In the new, bigger Spacemaster II, and with experience under their belt from before, they’re ready to tackle whatever the stars have to throw at them. First stop: Mars.When previously they had found the remains of a civilisation and desolation, this time they find a man – alive, but desperately ill. Can they save him? And can he tell what happened to the Martian cities that lie in ruins around them?Captain W.E. Johns continues his adventures in space with book two of the Tiger Clinton series, a roaring pulp SF romp, perfect for fans of Star Trek and vintage science fiction!