Knebworth House, Knebworth, Hertfordshire, England, UK
(Digby Manor hospital)
Benington Lordship Gardens, Benington, Stevenage, Hertfordshire, England, UK
(murder scene lodge)
IWM Duxford, Cambridgeshire, UK
(Hangar scene)
Balls Park, Hertford, Hertfordshire, England, UK
(hospital interiors)
Wall Hall, Hertfordshire, England, UK
(hospital interiors)
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