In Dumbarton, Scotland, a journalist uncovers a sixty-year history of dogs jumping to their death from a fifteen meter bridge. Could something be luring the dogs to the other side? In Kerala, India, villagers hear a loud sonic boom one morning and wake to see blood red rain falling from the sky. Is it just desert dust or could it be evidence of extra-terrestrial life? Lions living in the Serengeti National Park in Tanzania are exhibiting disturbing behavior: violent seizures and battles to the death with other lions. As the death toll climbs, will investigators identify the cause before the great beasts are pushed to the brink? Wildlife biologists, conservationists, veterinary pathologists and forensic animal behaviorists investigate some of the weirdest wildlife mysteries ever encountered.