Sci-Fi is the genre that explored both possibilities: the end of our existential crisis and the end of our existence. My novel, The 5th Wave, explores the latter scenario, because, frankly, I believe it represents the likeliest outcome of an extraterrestrial encounter. In short, if they're out there, we better hope they never find us.

Maybe the last human being on Earth won't die of starvation or exposure or as a meal of wild animals. Maybe the last one to die will be killed by the last one alive.

I'm not encouraged by the silence. I can think of no benign reason for it. I'm afraid we may expect something closer to Christopher Columbus's arrival in the Americas than a scene from Close Encounters, and we all know how that turned out for the Native Americans.

It's an either/or world now.

After another half second, he's locked me in a bear hug, crushing me into his chest and lifting my feet a couple inches off the ground as I kick furiously with my heels, twisting my head back and forth, snapping at his forearm with my teeth. And the whole time his lips tickling the delicate skin of my ear. "Cassie. Don't. Cassie..." "Let...me...go." "That's been the whole problem. I can't.

Self-pity is egotism undiluted, after all—self-centeredness in its purest form.

And then Evan Walker kisses me.