US TV
Rex Features
The December 10 episode, titled 'The Goop On The Girl', will see Deschanel united with her real-life sister Emily for the first time on screen.
She will play Margaret Whitesell, a distant relative of Dr Temperance Brennan, who arrives when Brennan's father invites her to spend Christmas with them. Ryan O'Neal is also appearing in the episode.
Fox has also announced that the milestone 100th episode of Bones, which is due to air next spring, will be directed by David Boreanaz.
> Deschanel: 'Changes won't ruin Bones'
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2012-13 Season
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