Mars, 2048. The first settlers, a mix of international workers and the super-rich. And the first unexplained death.

When a body turns up in the corridor between a scrappy warehouse and a half-built luxury hotel, no-nonsense Harbourmaster Rita Siddiqui finds herself in charge. With Earth temporarily out of contact and no official law enforcement on Mars, she ropes in Vice Captain Jaz Hickson, a wide-eyed young pilot who’s only just landed.

Rita and Jaz must navigate a growing list of suspects, a dwindling supply of patience, and a murderer who’s not finished yet.

Because even 140 million miles from Earth, people still have secrets. And someone’s willing to kill to keep them.