The trouble with goats and sheep

THE SUNDAY TIMES BESTSELLER `Part whodunnit, part coming of age, this is a gripping debut about the secrets behind every door' RACHEL JOYCE `A very special book' NATHAN FILER`An utter delight' SARAH WINMAN`A delight' PAULA HAWKINS`A treasure chest of a novel' JULIE COHEN`One of the standout novels of the year' HANNAH BECKERMAN`I didn't want the book to end' CARYS BRAY`An excellent debut' JAMES HANNAH`Grace and Tilly are my new heroes' KATE HAMER`A wonderful debut' JILL MANSELL`A modern classic in the making' SARAH HILARY`A stunning debut' KATIE FFORDE`Phenomenal' MIRANDA DICKINSON England,1976. Mrs Creasy is missing and The Avenue is alive with whispers.

As the summer shimmers endlessly on, ten-year-olds Grace and Tilly decide to take matters into their own hands. And as the cul-de-sac starts giving up its secrets, the amateur detectives will find much more than they imagined...