Portals

The world sees the portals as an invasion. For Lysa, they're an invitation. The portals appeared without warning. Every thirteen minutes they take a thousand humans, leaving exact duplicates in their place. Now, chaos reigns and no one is sure anyone is still the person they knew. Whoever is sending the portals has destroyed human society without firing a shot. But not everyone thinks they're a prelude to invasion. Lysa, a student far too bright for her own good, believes the portals could...