Predator / Red Sky At Night

S1, E4: A mysterious video shows a large predator racing across the harsh terrain of Dartmoor in the United Kingdom. Local legend suggests that it is either a giant cat or the hounds of the devil. Local landowners just want to know that something is killing their livestock. The investigation ends with a shocking discovery. While in El Cajon, California, the UFO community is in an uproar over a series of sightings involving a large triangular craft. The team meets with eyewitnesses before heading out to the dessert to explain the unexplained.