Downton Abbey fans were rocked by the deaths of Lady Sybil and Matthew Crawley after actors Jessica Brown Findlay and Dan Stevens asked to leave the uber-popular show, and now another actor has chosen to walk out Downton's door: Siobhan Finneran, who plays O'Brien!
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"I'm not doing any more," Finneran said in a recent interview. "O'Brien is a thoroughly despicable human being -- that was great to play." A spokesperson for Downton confirmed the news to HuffPo UK.