The Behaviour of Moths, By Poppy Adams

The darker side of sister-love lies at the heart of this gothic debut novel. From her outlook on the first floor, Ginny watches and waits for her younger sister to return to the "vast Victorian folly" that was once their childhood home.

Now grey-haired and potty, the reclusive lepidopterist has rarely ventured outside its walls. There are family secrets to reveal, and Poppy Adams keeps the reader pinned to the page.

Who shoved the young Vivi off the bell-tower and who pushed mother Maud down the stairs? Adams's book will cast a pleasant chill over any summer reading list.