It might be your standard murder mystery with a body found in a locked room, but it happened on the Grand Central Space Station, the jumping off point for humanity's expansion into the galaxy. Eve has just arrived at Grand Central as a junior member of security, but finds herself put in charge of the murder investigation since with all the various factions on the station, no one knows who on the station can really be trusted. At first, it seems the murder is unrelated to Eve's real and secret mission to find out who is trying to destroy the station. Soon, however, she becomes convinced the two missions are linked and she has to solve the murder to achieve her true mission, assuming those factions don't kill her first.