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.

Ben and the team take on two cases that have baffled the paranormal community for years. In Indiana, a ghost hunter inadvertently captured what she thinks is the ghost of a civil war soldier while investigating a desolate abandoned cemetery. Ben and his team use everything at their disposal to eliminate the possibility of a hoax or even a natural phenomenon, but explanations are hard to come by in this case. In Colorado, a series of shocking cattle mutilations have left ranchers in the area speculating that something may be coming from the sky to abduct and experiment on their livestock. The team tackles the case using a series of scientific methods that seek to determine whether there could be a more natural explanation for the case, with surprising results.