Undying - Amie Kaufman

Trapped aboard the Undying's ancient spaceship and reeling from what they've learned there, scavenger Mia and academic Jules are plunged into a desperate race to warn their home planet of the danger humanity's greed has unleashed. From the mountains of Spain to the streets of Prague, the sequel to Unearthed is a white-knuckle ride that will send readers hurtling back to earth, and leave them breathless until the last page.