When a killer comet hurtles toward Earth, 18-year-old Joanna Murphy is selected to wait out the apocalypse in an underground bunker. She enters cryosleep with her close-knit team, preparing to resettle the planet after the atmosphere clears in 200 years. Joanna is the only one who wakes up. Faced with a bunker full of bones and a blocked exit, Joanna must claw her way to the surface, figure out what happened to her team, and try not to panic - or die. That’s going to be tricky if she’s the only person left in the world.

Caesar, an undercover operative, enters Carmichael with the briefest of orders from his boss and a countdown on his phone. What will happen when the clock strikes zero? Deputy Amelia Miller is dispatched from a nearby city, and a series of events keeps her around much longer than she'd expected. In the middle of the night, something shifts, and the whole town disappears off the face of the Earth. Who caused the shift, and what lies beyond the veil of their settlement?

Jane is a leftover clone. Created for an unknown purpose, then abandoned at a rundown facility outside Grid City, she has a knack for trouble and a burning desire to find out why she was made.

The Amazon rainforest holds a world-changing secret—a ship lost to time from another world. College student Will Kaufman unearthed the biggest archaeological discovery in human history… he just needs to find a way back to Earth to tell people about it. Four thousand years ago, a Federation bounty hunter Void ship crashed on a remote and primitive planet. There it remained until Will found it and accidentally reactivated it, launching him light-years away.

Laurel was working in the ER, stabilizing a patient, when the unthinkable happened. An EMP hit. The power went out. And it never came back. In the devastating aftermath, she must turn South Minneha Hospital into a place of refuge, a beacon of hope for her fellow survivors. But a beacon attracts predators, too… Predators like Arlo Staaf, the brutal leader of a ruthless gang. Desperate to save his dying son, Arlo takes over the hospital and gives Laurel an impossible ultimatum: save his terminally ill boy, or watch everyone she cares for die.