In 1887, the social-climbing Cranstons voyage from New York to London, where they hope to find a husband for their awkward older daughter, secretly accompanied by Helena and her mouse siblings, for whom the journey is both terrifying and wondrous as they meet an array of titled humans despite their best efforts at remaining hidden.
- ISBN: 9780803734555
- Author: Peck, Richard
- Illustrator: Murphy, Kelly
- Published: 2011 , Dial Books for Young Readers
- Themes: Adventure, animal-human relations, Family, journeys, mouse, Oceans, Siblings, social class, Travel, voyage
- Descriptors: England (UK), Fantasy, Intermediate (ages 9-14), United States
- No. of pages: 272