A LOCKED ROOM MYSTERY IN SPACE. The colonists of the first space station on Mars have vanished. Captain John Stanton leads a second team to the Red Planet, unsure what he'll find. Originally assigned merely to relieve the first group, Stanton must now figure out what happened to them, and keep the same fate from befalling his own crew. As he investigates, the mystery deepens and the dangers multiply: remorseless sandstorms, virulent bacteria... perhaps even ancient Martian ghosts. Stanton's mission changes from relief, to rescue, to simple escape.