The Borrowers Avenged: Mary Norton

After their narrow escape from the Platters' attic in The Borrower Aloft, Pod, Homily, and Arrietty Clock return to their miniature village.
But it is no longer a safe refuge, and so once again the Borrowers must go looking for another place to live.
But finding a new home is hard when you're running for your life.
The villainous Platters will not rest until they recapture the tiny family, and they hound the Clocks' every move. When the Borrowers finally do set up house under a window seat in an old rectory, it seems they have found safety at last -- until the Platters turn up in the church one night, forcing the Borrowers into a final desperate struggle for their freedom.