Cassie Sullivan is only 16-years-old but her fighting spirit and courage has left her as one of the only survivors on a demolished Earth. The world has been taken over by alien forces known only as The Others, and they have launched a strategic attack on the planet in order to gain ownership. First came the darkness as the mothership wiped all power from the globe; the second wave brought total devastation in the cities, flooding everything in sight; and with the third wave came an airborne infection so deadly it took out whole nations in months. It wasn't long before they launched their invasion, killing any survivors and possessing human beings as hosts to walk among people in secret. Now what's left of the world is preparing for what may be the most apocalyptic wave of all, but the strongest people have survived and they're not ready to give up their home just yet. Cassie knows to trust no-one, but when she meets another apparent survivor, she knows she has to put her faith in him if she wants to find her missing brother.

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