It's the near future, and mankind has expanded its presence in space. Maintaining law and order beyond Earth is the responsibility of the International Space Police Force, known colloquially as the Star Cops. Their leader is Commander Nathan Spring.
Alice Okoro returns to the Moon having escorted a prisoner, Mitchell Kane, from a Mars waystation. He has confessed to committing a murder on the Red Planet, but Nathan suspects he isn't telling the whole truth.
Is Kane the killer? If not, who is? And why would he admit to a murder he hasn’t committed? The answer to those questions brings shocking consequences.