When amateur thriller writer Ryn Weaver is accepted for the prestigious Writer-in-Residence program at The New York Public Library, she never expected to stumble into a real-life mystery surrounding the famous children's book, Lillies in the Cellar. Inspired by Yara and her twin Yarrow Thornberry's eccentric upbringing raised behind the walls of the library, the siblings have long-buried their infamous literary past as Yara now mentors young authors...