Eve gremory

Was there really a witch? You can clearly see that its a murder but it's just a theory. The proof that there wasn't a witch is the video itself. How can someone got the videotape and return with no injuries? It's a setup for Josh and Mike to kill Heather. The "supernaturals" things was so easy to set it up. And why would the guys walk in front of her if they don't know where they were going and its Heather who have the map.