Five years ago, Oliver escaped from a Grey facility with three others. He didn't come back alone.

Something followed him out. Something that lives under his skin, speaks in his mind, and calls itself Shadow.

Now new abductions are happening. People are vanishing, returning different, or not returning at all. When someone close to Oliver goes missing, he’s pulled back into the nightmare he thought he’d escaped. But this time, the Greys aren’t the only threat. A shadow organization called Icarus is circling, and they want what’s inside him.

To save the ones he loves, Oliver will have to go deeper than before. Into alien facilities. Into enemy territory. Into the thing that’s been growing inside him since the day he broke free.

Some bonds can’t be broken. Some can’t be survived.

GENERATION ZERO is the second book in the Xenoforming series.