Ophelia and the marvelous boy

Unlikely heroine Ophelia Jane Worthington-Whittard doesn't believe in anything that can't be proven by science. She and her sister Alice are still grieving for their dead mother when their father takes a job in a strange museum in a city where it always snows. On her very first day in the museum Ophelia discovers a boy locked away in a long forgotten room. He is a prisoner of Her Majesty the Snow Queen. And he has been waiting for Ophelia's help..