Steven Moffat has confirmed the rumors that there will be a special "one hander" episode starring nobody except the superior Scotsman, Peter Capaldi. It's being billed as the "most experimental episode" ever, but like, every episode is marketed as "the most ?????? ever/yet" sooo...
"We always like a new challenge on the show," Moffat continues to bark with potentially no bite as usual. "I can't tell you too much about this, but it's certainly unique and a big first for the show!"
source Give 12 a Jesse Pinkman like companion, I think that dynamic would be gr8