"Ophelia and the Marvelous Boy" by Karen Foxlee is a middle-grade fantasy novel that follows the adventures of a young girl named Ophelia who finds herself trapped in a mysterious museum with a magical mission to complete. As Ophelia explores the museum, she meets a boy who claims to have been imprisoned there for centuries by a powerful sorcerer. Together, they embark on a perilous quest to find the key that will release the boy and save the world from eternal winter. Along the way, Ophelia must confront her own fears and doubts, and learn to trust in herself and her abilities. With its richly imagined setting, engaging characters, and thrilling plot, "Ophelia and the Marvelous Boy" is a captivating tale of adventure, friendship, and the power of imagination.