Wheatley Dennis Wheatley 
Star of Ill-Omen [EPUB ebook] 

Kem Lincoln, ex-Commando and British secret agent, was sent on a special mission to South America. He knew at the outset that it was an assignment fraught with danger, but, amidst the politics and the affairs, he was not expecting the extra complications of extra-terrestrials and abduction. Powering through space to planet Mars, how will the unlikely threesome of Kem, his mistress, and her husband, work together to return home to earth? And when they meet a second group of captors, will they help or hinder each others’ return?