• ‘Doctor Who’ Season 9 Episode 12 (Finale) Live Stream, Spoilers, Promo: How To Watch Hell Bent’ Online—Find Out What Happens When Doctor Faces Off Other Time Lords

‘Doctor Who’ Season 9 Episode 12 (Finale) Live Stream, Spoilers, Promo: How To Watch Hell Bent’ Online—Find Out What Happens When Doctor Faces Off Other Time Lords (Photo : Facebook/Doctor Who/BBC)

"Doctor Who" Season 9 is only few hours from airing its final chapter. The long-running sci-fi series is set to feature the highly-anticipated finale on Dec. 5, 2015. Episode 12 is titled "Hell Bent" and will see the Doctor's attempt to take over the other Time Lords. Has Peter Capaldi's Doctor gone rogue? Here are spoilers and promo for the action-packed finale. Read on to find out what happens when Doctor comes face to with other Time Lords.

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[Spoiler alert! This article contains spoilers for "Doctor Who" Season 9 Episode 12 (Finale) "Hell Bent." Read on only if you want to explore more about it.]

In Episode 11, Doctor Who returned home, planet Gallifrey. He is here for the battle of all times. Moving on to Episode 12 of Season 9, the finale segment is expected to feature the most epic battle between the Twelfth Doctor and other Time Lords.

"If you took everything from him, betrayed him, trapped him, and broke both his hearts...how far might the Doctor go?" reads the synopsis for as published on Metro UK. The website speculates that the synopsis might be hinting at the end of Doctor Who's relationship with Jenna Coleman's Clara Oswald.

While returning to his home planet, the Doctor comes face to face with Time Lords in a struggle that takes him to the end of time.

In the meantime, the finale is expected to reveal who Hybrid is. According to the IBTimes, Maisie Williams Ashildr will return in Episode 12. In Episode 5, when she was brought back to life, she went from being a human to an immortal. Furthermore, the synopsis hints at a "Doctor's confession."

In an interview with Radio Times, "Doctor Who creator Steven Moffat explains the title of the finale segment. "I think we probably take the Doctor right to the very end of his tether. I've toyed with it in the past but never really gone the whole hog. What would happen if you really, really, really pissed him off? If you took everything from him, broke his heart, kicked the crap out of him and he got up again - what would you be facing then? It's called Hell Bent for a reason," Moffat said. "As has been threatened occasionally in the series, what happens when he gets really mad? Well, this is it. Yes, he goes back to Gallifrey, and he goes back in a very bad mood."

So after all this time, when Doctor returns home he is reportedly "a mad bad dangerous bastard. A lawless man." A promo video for the "Doctor Who" Season 9 teases the events of Episode 12. Scroll down to watch the trailer.

"Doctor Who" Season 9 Episode 12 "Hell Bent" airs Dec. 5, 2015 at 8:00 pm on BBC One and 9:00 pm on BBC America. Fans can also watch the finale online via live stream on bbcamerica.com and bbcone.com after the episode goes live. Stay tuned for more spoilers and update.