Mark Tidd's Citadel

Mark Tidd's citadel is a children's adventure novel set during a summer vacation. A group of friends arrives at a summer hotel, only to find it abandoned and in disrepair. Faced with an unexpected situation, they decide to rent the hotel and take on the challenge of managing it. Their adventure takes an intriguing turn when they meet a boy who seems to be hiding from mysterious pursuers. As the group settles into the hotel, they begin to notice strange occurrences, building an air of suspen...