Prison Planet

Camp One has one brutal rule: If you attempt to escape, you die - and three random prisoners die with you.
Tom Thrush has resigned himself to dying by degrees, doing forced labor while he slowly starves. When he learns that a distant mesa holds a slim chance at freedom, he does nothing. The price of escape is too high.
Then fever sweeps through the camp. Surrounded by armed guards and an unforgiving jungle, paralyzed by the threat of reprisals, Tom watches as the men he's sworn to protect die one by one. If anyone is to survive, Tom will have to do the unthinkable.
Escape.