The Space Mavericks: Michael Kring

Transporting valuable cargo between opposing galaxies, Fripp and Kohn run afoul of interplanetary law and find themselves playing cops and robbers as they shuttle desperately from one lost world to another, pursued by the space fleet of the police. Their only chance for survival lies on a desolate planet who inhabitants have mysteriously disappeared, leaving behind traces of an advanced civilisation - and the secret of regeneration for anyone bold enough - or clever enough - to decipher it...Cover art by Albert Pujolar.