The Borrowers by Mary Norton (author)

The tiny Borrowers live in the secret places of quiet old houses; behind the mantelpiece, inside the harpsichord and under the clock. They own nothing, borrow everything, and think human beings exist just for their amusement. They are completely hidden from people. Until one brave young Borrower breaks their only rule – and makes friends with a human boy.

“Beautifully written, poetic and almost always alarming, the Borrowers have something very mysterious, sad and exciting about them.” _ Sunday Times_