WARNING: This article contains spoilers and predictions for Supernatural Season 15. Read at your own risk.

The premiere of Supernatural Season 15 welcomed everyone to the end, both literally and figuratively. With God's latest act bringing back all the demons that Dean and Sam overthrew in previous installments, they are now facing the biggest challenge of their lives.

Fortunately, they have Cas and Jack -- who is not Jack, by the way -- to help bring down what God brought back to the world. While they tried everything to resolve the first encounter, the group has realized that they will need more workforce. 

According to CartermattSupernatural Season 15 Episode 2 titled, Raising Hell, Dean, and Sam, along with Cas, will call the help of Rowena. Hence, the subtitle: Sending Out An SOS.

It's only logical why they are now asking for assistance. Although they were able to bring down these demons from the past, facing them today all at once is a very different story. 

Based on the synopsis, it seemingly appears that Rowena may not be available at first. This is why "unexpected" assistance from Ketch will be evident in the upcoming episode. 

There are no clear details as to how Ketch will help them keep the evil souls at bay. Even so, the Winchester brothers will surely succeed in the next challenge. 

Also, Rowena might not be present at first. But, it has been already revealed that actress Ruth Connell will guest star in the next episode of Supernatural Season 15. So, it's likely that she'll arrive in the later parts of the installment. 

Rowena and Ketch's arrival will be a big help to everyone. However, it is not revealed if they will stay for good. 

Some fans are convinced that they will only play their parts in an episode or two. And, as for the bigger part of the season, it will be placed mainly on Dean and Sam's shoulders to keep the world safe again. 

MEA World Wide pointed out that God has gone "AWOL" again after "wreaking havoc." It's not surprising anymore, considering that this is what he usually does every time he appears. Even so, there are hints that he might return before Dean and Sam succeed in keeping Earth safe. As to when this will happen, there's no clear information yet.

The same is also true for Jack. While his body is currently utilized by a demon, to which Sam refers to as an "abomination," the publication asserted that the real Jack would also return before Supernatural Season 15 concludes. 

The upcoming episode will air on October 17, on The CW.