We have all wondered about the possibility of intelligent life visiting Earth. But what if their intentions were to take over With superior intelligence and weapons humans may not stand a chance. This title explores the worst-case scenario of an alien invasion from what we know about the potential for alien life to what plans may be in the works in case of attack. Features look back at the flying saucer sighting in Roswell and a narrative opening envisions what an attack might look like. Watch out Aliens may attack without warning