Fans already got a glimpse of Peter Capaldi as the next Doctor with his companion, Clara, in the first promoting Season 8. Now fans get to see the dual hearts of a Time Lord in action as poor Capaldi is electrocuted while manning a heavily damaged Tardis in the second trailer, which debuted over the weekend.
By the way, the narrator sounds suspiciously like a particularly angry Dalek. Perhaps it's the Doctor's old enemy Davros saying, "I see into your soul, Doctor. I see beauty, divinity, hatred!" Only time will tell.
The Tardis officially returns to TV on August 23 with the feature-length episode entitled "Deep Breath."