Doctor Who will have five new guest stars for this year's annual Christmas Special.

Of Shaun of the Dead fame, Nick Frost will join the cast along with Nathan McMullen (Misfits), Natalie Gumede (Coronation Street), Faye Marsay (The White Queen), and the second Doctor's son, Michael Troughton (Breathless).

The BBC has yet to reveal the actors' roles, but the filming has already begun and Frost couldn't be more excited.

"I'm so thrilled to have been asked to guest in the Doctor Who Christmas Special, I'm such a fan of the show," Frost told the BBC (via Doctor Who TV). "The read-through was very difficult for me; I wanted to keep stuffing my fingers into my ears and scream 'No spoilers!' Every day on set I've had to silence my internal fan-boy squeals!"

The untitled episode was penned by showrunner Steven Moffat, and Paul Wilmshurst is currently in the midst of directing the Christmas broadcast.

Find out more when the Doctor Who Christmas Special airs on Dec. 25. In the meantime, catch new adventures with Twelve and Clara every Saturday on the BBC and BBC America.

Click the video below to see a preview for the series' next episode, "Time Heist."

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Doctor Who, Television, BBC, BBC America