Reborn as My Sister After the Fall

I died a victim. I woke up a weapon.
The apocalypse didn't kill me-a car crash did. I watched my sister, Lily, die right beside me in the rain-slicked wreckage of the old world. But when I opened my eyes, the pain was gone. My broken limbs were whole. My hands were steady.
And they weren't my hands anymore.
I've woken up in my sister's body. But the Lily I knew is gone, replaced by a vessel honed for war. I have her face, but I also have her reflexes, her lethal combat training, and a mysterious black ID card that links her to a classified government experiment known only as "The Recruits."
Now, trapped in a body that knows how to kill better than I know how to breathe, I have to survive a world overrun by the infected and ruled by the cruel. With a half-feral orphan in tow and a target on my back, I'm heading north to find the truth.
My sister had secrets. Now, they're the only thing keeping me alive.