The special extended-length episode, titled "Let the Nightingale Sing," will air Sunday Nov. 2 (8:30am/7:30c) and features Joanne Froggatt (Anna Bates), Lesley Nicol (Mrs. Patmore), Matt Milne (Alfred Nugent), Nigel Harman (Mr. Green) and Robert Bathurst (Sir Anthony Strallan).
The plot has Doc and her toys time-warping back to 19th century England where they meet the young Florence Nightingale (Frogatt) and help her realize her dream of becoming a nurse. Nicol voices Pip, a porcelain doll, Milne is Bernard, a teddy bear, Harman is Doodle Doo, a tin rooster, and Bathurst is Fiddlesticks, a toy admiral. Blimey!
Here's an exclusive TV Guide Magazine clip: