This week’s episode of Supernatural brings some very interesting mysteries to light and it’s doing so at the perfect time too. If the mysteries of what Sam is and what Samuel was doing went on much further, then those plotlines would have became exhausting. It is a bit surprising that the promo for this episode gave away such a big secret. However, the revelation that Sam is acting strangely because he has no soul is actually a very good twist. If it turned out it was a monster or demon looking like him, then that would have felt cheap. The ramification of this reveal does feel slightly ambiguous. That’s mainly due to nature of what a soul really is… or if it even exists.