Key of Pearl (Timeless #4.5)

With the dimensions ripping and expanding across Earth, time has become an enemy. Now Andrew must help his kindred soul as she suffers through nightmare-like visions that’ll lead them to the Key of Pearl, the quintessential master key to the universe.

They’re willing to fight their way through a savage world full of predators to claim the prize. With the key, they’ll be able to seal the dimensional tear and, eventually, open the pearly gates to Celeste where the cruel Gods reside.

Really, what could go wrong?