- Millions of miles from Earth, Meridian Station is home to a hundred men and women tearing ore out of Mars, four kilometers beneath the plain of Arcadia Planitia — a sealed world of metal and red dust, where a single step outside means death in seconds.
When one colonist is found murdered — then a second — Earth dispatches Detective Nora Bishop. By the time she lands, solar conjunction has begun: for three weeks, Mars is cut off from everything. No communications. No rescue. Nowhere to run.
Nora has a hundred suspects, no backup, and a killer who knows the station better than she does. Every Martian night takes another name — and the one certainty, in this vacuum-sealed tomb, is that the murderer is locked in here with them, and he isn't finished.
A relentless locked-room thriller, where the emptiest place in the universe becomes the most airtight room of all.