But when the door locks and someone dies, they realize the greatest threat to their survival may not be above ground - it may already be inside . . .
Under Ground is a page-turning locked-room mystery from the combined talents of Sarah Lotz and Louis Greenberg, writing as S. L. Grey. It is perfect for fans of Under the Dome by Stephen King and films such as The Hole and The Descent (with a pinch of And Then There Were None by Agatha Christie).