Recent spoilers concerning 'Supernatural' Season 10 reveal that the upcoming installment is likely to feature Dean after his reincarnation into a demon during the Season 9 finale.

One of the Winchester brothers is no longer in the right state of mind after being possessed by a demon. Now that Dean is completely different, Sam takes control as he tries to figure out how he will find a cure for his brother.

Executive producer of the hit TV series Jeremy Carver already spilled the beans saying that the upcoming season will be focusing more on one of the brothers.

According to the spoilers surrounding the 'Supernatural' Season 10, Sam will be tracking down his brother while Dean will be encountering lots of challenges as he has transformed into a demon, which will probably account for half of the season.

Carver also hinted that a new character will be introduced in the series. He mentioned that someone named Cole will also be looking for Dean, but for a totally different set of reasons. Also, the character is said to be someone from Dean's past, so it's not a complete mystery.

'Supernatural' in its next installment will not be back until the Fall and so far, the list of new cast members has been kept a secret. Previous rumors revealed that a new character by the name of Rowena will appear this season, but the actress for the role has not been named. This is mainly because production hasn't found someone with a suitable Scottish accent yet.