It is Christmas time and Maisie Llewelyn is invited as a guest to Wolverden Hall. She does not know anybody there but she quickly befriends two girls. She meets them in the nearby church whose tower was recently rebuilt. It is strange and a bit suspicious that none of the other guests know the two girls but Maisie decides to trust them. After Christmas the three friends decide to climb the new church tower. Maisie is however unaware of the danger that lurks behind her back. What will happen and how will this friendship end up? Who are those girls and what do they want from Maisie? "Wolverden Tower" holds the answers.