Midsomer Murders episode The Dark Rider was filmed at Knebworth House in Hertfordshire.
- Credit: Alan Davies
Knebworth House doubles for Quitewell Hall – with the first unfortunate victim falling to his death from the mansion's roof late at night after seeing a headless horseman.
While there's no 'death by cheese' as suffered by the unfortunate Martine McCutcheon in a different episode, one unsuspecting victim, Ludo DeQuetteville, gets crushed to death by a dislodged stone gargoyle.
A Roundheads v Cavaliers reenactment took place at Knebworth House in the Midsomer Murders episode The Dark Rider.
- Credit: Alan Davies
The Knebworth estate also hosts a Civil War re-enactment in this series 15 episode that gets rather out of hand between the warring Roundheads and Cavaliers, with John's wife Sarah Barnaby (Fiona Dolman) unable to control proceedings for the Causton Historical Society.