The quiet girl - Peter Høeg

Kasper Krone, a world-renowned Danish clown with exceptional powers of hearing, has a deep love for the music of Bach, and an even deeper gambling debt. Wanted for tax evasion and on the verge of extradition, Krone is drafted into the service of a mysterious order of nuns who promise him a reprieve from the international authorities in return for his help safeguarding a group of children. When one of the children goes missing a year later, Krone sets off to rescue the young girl but on the way makes a series of shocking discoveries about her identity and the true intentions of his young wards.