(Rex Nihilo #1)
by Robert Kroese (2014)
The only way for Rex to escape a lifetime of torture on the prison world Gulagatraz is to score a big payday by pulling off his biggest scam. But getting mixed up in the struggle between the tyrannical Malarchian Empire and the plucky rebels of the Revolting Front – and trying to double-cross them both – may be his biggest mistake.
Luckily for Rex, his frustrated but faithful robot sidekick has the cyber-smarts to deal with bounty hunters, pudgy princesses, overbearing overlords, and interstellar evangelists.
Another excellent episode in the series.