Gelderland (S01E09)

The team ventures into Gelderland, the oldest province in The Netherlands. At a 16th-century chateau named 'The Spookhaus,' Kay is startled by the sound of children's voices echoing in the dark, while Chris is unexpectedly struck by a child's marble that seems to come from nowhere. Their investigation then leads them to Doornenburg, where they examine a 13th-century castle known for its paranormal occurrences and the mysterious Sigillum Dei, an amulet believed to connect with both angels and Lucifer. The atmosphere intensifies during a séance, resulting in a chilling transformation in Chris.