Mary-Kate and Ashley hear that if you pet Lucy, the tattooed cat, on Halloween and make a wish, your wish will come true. But Lucy disappears and the girls must

When the Trenchcoat Twins learn about a tattooed cat who grants the wishes of those who pet it, they want nothing more than to find it, until it goes missing.

When the Trenchcoat Twins learn about a tattooed cat who grants the wishes of those who pet it, they want nothing more than to find it, until it goes missing.

A BBC Radio 2 Book Club Pick 'Ingenious ... touching, surprising and sometimes heartbreaking.' Guardian 'If you're itching to read a new novel by David Mitchell