User blog comment:Paul.rea/Teen Wolf News 022416/@comment-5182725-20160224232856

While I'd like to join the "this is a red herring" camp, there really wasn't any other choice considering there weren't any other teenagers close to the pack (that's what happens when you kill every other suspect and add them to Theo's pack or don't introduce someone new to add to the suspect pool) that it could have been for the impact.

For a second though I was thinking it was Corey. And the previews only reinforce that Mason is the beast. Wouldn't make any sense considering Theo was basically in charge of all the misdirects. On their own, the doctors just don't seem that smart or calculating enough for this to be a misdirect.