Ghosts of the Eastern Bloc: Ukraine and Poland - S2.E21

In the countryside of Ukraine lies a castle called Pidhirtsi. Dr. Vita Susak wants to turn the erstwhile tuberculosis hospital and Nazi experiment grounds into a museum, but she's concerned about the paranormal activity there. When GHI arrives, they begin by investigating tales of the nobleman who lived there who allegedly immured his wife because she was unable to have children. Visitors have spoken of seeing a White Lady - thought to be the nobleman's wife - and while Susan looks for her, she's hit by a dizzy spell, hears someone say "Oi," and feels something touch her face. While Britt and Joe seek the White Lady in the chapel, they also feel lightheaded. In an EVP session, they ask for a knock, and get one. They ask again, and again get a positive response.