The "Dahl trilogy" refers to a series of three popular children's books written by Roald Dahl. The trilogy includes "The Witches," "Matilda," and "James and the Giant Peach." Each story features imaginative plots, memorable characters, and themes of bravery and resilience, appealing to young readers. These books have been adapted into various forms of media, including films and stage productions, further enhancing their popularity. Roald Dahl's unique storytelling style combines humor and a touch of darkness, making the trilogy both entertaining and thought-provoking for children and adults alike.