".... the anniversaries reunite the 'Fourteenth Doctor' (David Tennant) and 'Donna Temple-Noble' (Catherine Tate) as they come face-to-face with their most terrifying villain yet: the 'Toymaker' (Neil Patrick Harris)..."
Cast also includes Yasmin Finney, Miriam Margolyes, Ruth Madeley, Jacqueline King, Karl Collins and Jemma Redgrave .
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