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# Series Preview
- URL: https://www.cascadepbs.org/show/lucy-worsleys-keys-to-the-castle/trailers/series-preview-mspicu/
- Published: 2026-11-12T20:10:07.000Z
- Updated: 2026-11-14T06:30:09.000Z
- Description: Lucy Worsley unlocks the secrets of four of the world’s most spectacular palaces.
- Author: Cascade PBS Staff
- Tags: Lucy Worsley’s Keys to the Castle, #ZZZ_Show_dd48e3ac-6bfb-4d34-ac63-d013b129e7eb, #v1.5, #ZZZ_Trailer_775e0948-5716-471d-8c2f-3b2aa690321c, #trailer

Armed with the keys to the world’s greatest palaces, Lucy Worsley explores hidden rooms inside Marie Antoinette’s Versailles, discovers how Blenheim Palace shaped Winston Churchill, and finds a dark secret at the heart of the Doge’s Palace in Venice.