Mysteriet på Greveholm
The Olsson family, weary of city life, rents what they believe is a house in the country for a traditional Christmas. Instead, they arrive at the grand castle Greveholm, where the children soon discover the castle is not like any other – it is haunted.
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Ep 1House for rent
Tired of spending Christmas in their cramped apartment, the Olsson family rents a secluded country house for the holidays. But when they arrive, they discover they've been given the keys to the mysterious Greveholm Castle instead.
Ep 2A strange castle
As the family settles into their unexpected new home, the children eagerly explore the castle's endless corridors and forgotten rooms. Meanwhile, two ghostly residents are less than thrilled about the unexpected company and begin plotting how to reclaim their peaceful home.
Ep 3Ghost shock
Lillan's new voltmeter picks up something impossible, confirming her suspicions that Greveholm is haunted. While Jean and Staffan step up their efforts to frighten the family away, the children become even more determined to uncover the truth behind the castle's strange inhabitants.
Ep 4To tame a ghost
After discovering that the ghosts are real, Ivar and Lillan keep the secret to themselves rather than risk leaving the castle. Armed with homemade ghost-hunting equipment, they begin investigating the spirits, while Melitta recruits an unlikely ally to help prove that Greveholm is haunted.
Ep 5A strange family
Jean and Staffan grow increasingly frustrated as their attempts to scare the Olssons continue to backfire. While the children search for more clues about the castle's mysteries, the ghosts realize this family may be unlike anyone they've encountered before.
Ep 6The trap
Determined to prove that the ghosts are real, Ivar devises a clever trap with Lillan's help. While Leif unknowingly begins assembling the mysterious robot parts found in the castle, Jean and Staffan step up their efforts to frighten the family. But after an unexpected encounter with the children's computer, the ghosts find themselves caught in a trap they never saw coming.
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