Bram Stoker Award nominee for Best First Novel!"This claustrophobic, horror-leaning tour de force is highly recommended for fans of Jeff Vander Meers Annihilationand Andy Weirs The Martian." — Publishers Weekly (starred review)A thrilling, atmospheric debut with the intensive drive of The Martian and Gravity and the creeping dread of Annihilation, in which a caver on a foreign planet finds herself on a terrifying psychological and emotional journey for survival.When Gyre Price lied her way into this expedition, she thought shed be mapping mineral deposits, and that her biggest problems would be cave collapses and gear malfunctions. She also thought that the fat paycheckenough to get her off-planet and on the trail of her mothermeant shed get a skilled surface team, monitoring her suit and environment, keeping her safe. Keeping her sane. Instead, she got Em. Em sees nothing wrong with controlling Gyres body with drugs or withholding critical information to ensure the smooth operation of her expedition. Em knows all about Gyres falsified credentials, and has no qualms using them as a leashand a lash. And Em has secrets, too . . . As Gyre descends, little inconsistenciesmissing supplies, unexpected changes in the route, and, worst of all, shifts in Ems motivationsdrive her out of her depths. Lost and disoriented, Gyre finds hersense of control givingway to paranoia and anger. On her own in this mysterious, deadly place, surrounded by darkness and the unknown, Gyre must overcome more than just the dangerous terrain and the Tunneler which calls underground its home if she wants to make it out aliveshe must confront the ghosts in her own head.But how come she cant shake the feeling shes being followed?