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12/12/2012 05:19 pm ET

'Doctor Who' Christmas Special: New 'The Snowmen' Trailer (VIDEO)

While most people are counting down the days until Santa drops off their gifts, Whovians are marking their calendars in anticipation of the "Doctor Who" Christmas special.

The 2012 special, titled "The Snowmen," includes Jenna-Louise Coleman's official debut as Clara, the Doctor's new companion. What else happens? HuffPost TV has seen it, but we're sworn to secrecy. However, we revealed a few spoilery details here. Check out the new trailer below.

The "Doctor Who" Christmas special, "The Snowmen," airs December 25, 9 p.m. EST on BBC America.

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