The WORST seasons of Alien Mysteries

Every season of Alien Mysteries ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Alien Mysteries!

Discovery's ALIEN MYSTERIES is a fantastically creative and imaginative new take on some of the most enduring UFO mysteries from the last 50 years. Each story is backed up by credible witnesses, investigative reports, and tangible evidence such as physical markings, photographs, radar reports, and videos.