'Supernatural' Season 10 finale titled 'My Brother's Keeper' is said to be further traumatic compared to the fantasy horror television series' Season 9 finale where viewers saw Dean being transformed into the knight of Hell.

According to IB Times, while speaking at Salute to Supernatural in Seattle recently, Jared Padalecki, who portrays the character of Sam Winchester in the series, talked about the filming the final episode of Season 10.

The actor revealed, "We are filming the final arc of Season 10 right now and it's one of those really intense final arcs, I mean it's probably the most intense I can remember since like season five or something like that." At the same time, Padalecki cautioned, "These final episodes are very traumatic."

Jason Fischer, who is the production coordinator of the series, also teased a surprising finale.

Currently, the storyline of 'Supernatural' shows that Dean's condition is getting worse, while Castiel and Sam doing their best possible to find a cure for the eldest Winchester.

Now, the question remains whether or not Dean will battle fight against the Mark of Cain, which actually takes him down a murderous path.

The fans of the series are aware that Winchester can only be cured is by killing his own brother. In fact, Cain has himself revealed that his protegee is living his life in reverse. Like Cain began his journey as a killer by killing his brother Abel, Dean's final step in his journey also begins with murdering his brother.

According to the storyline, Cain has already told his protegee that he will first kill Crowley and then murder Castiel, while his brother will be his last prey.

There is no doubt that this possible plot will leave fans catching their breathing as Season 10 comes to a close.

'My Brother's Keeper' will air on Wednesday, May 20, on The CW.