Aliens - Judith Herbst

In September of 1961, Betty and Barney Hill were driving home late at night. Suddenly, they saw a bright light in the sky. They watched it for a bit, then drove on. When they arrived home, they realised they had somehow 'lost' two hours. Under hypnosis, the Hills reported that alien beings had taken them aboard a spacecraft and given them a physical exam before letting them go. Hundreds of other people have also claimed to have been abducted by aliens. Has Earth really been visited by aliens from outer space? If so, how did they find us and what do they want with us?