Saturday, 20:25 
Secrets of Britain's Historic Houses
Power and Persecution (Chirk, Oxburgh and Penrhyn)
In the final episode, secrets are revealed at Chirk Castle, where a rare 18th-century portrait of servant John Wilton is uncovered through conservation. At Oxburgh Hall, discoveries like a rat's nest and a hidden portrait shed light on the Bedingfeld family. At Penrhyn Castle, the Trust works to uncover the untold stories of the 1900 quarry strike.