The Peculiar (The Peculiar, 1)

The international bestseller and debut novel by teenage author and classical musician Stefan Bachmann is part murder mystery, part gothic fantasy, part clockwork adventure. Best-selling author Rick Riordan said of The Peculiar, "Stefan Bachmann breathes fresh life into ancient magic."
Don't get yourself noticed and you won't get yourself hanged. In the faery slums of Bath, Bartholomew and his little sister Hettie live by these words. Bartholomew and Hettie are Peculiars, and neither faeries nor humans want anything to do with them. But when Peculiars start showing up in London murdered and covered with red tattoos, Bartholomew breaks all the rules and gets himself noticed. Full of magic, dazzling inventions, and intriguing characters such as Mr. Jelliby and Lord Lickerish, this story of friendship, bravery, and nonstop action adventure was hailed by best-selling author Christopher Paolini as "swift, strong, and entertaining. Highly recommended." The Peculiar ends with a spectacular cliff-hanger, and the story concludes in The Whatnot.