Tim Major delivers an intriguing murder mystery that pays homage to Asimov's seminal robot stories and also to the classic detective tale. Investigator Abbey Oma is dispatched to a remote and failing Martian colony tasked with solving the murder of scientist Jerem Ferrer. The killing took place in an airlock-sealed lab, and the only possible culprit is a robot incapable of harming humans... The more Abbey learns the more she comes to realise that the case is by no means as open and shut as she might have hoped, with political and commercial interests at stake and local resentments threatening both her work and her very life.