In Jeffrey Eugenides’ novel The Virgin Suicides, a group of teenage boys are so captivated by the Lisbon sisters – five mysterious teenage girls, shut up together in their family home – that they procure the youngest sister’s diary after she dies by suicide at  13. “Cecilia writes of her sisters and herself as a single entity,” they observe, reading it. “It’s often difficult to identify which sister she’s talking about, and many strange sentences conjure in the reader’s mind an image of a mythical creature with ten legs and five heads, lying in bed eating junk food.”

Daisy Johnson’s Sisters is a short, atmospheric horror novel full of strange sentences, claustrophobic rooms and distorted, converging bodies. September and July are best friends as well as sisters; born less than a year apart, one is almost never without the other. “Sometimes I think I can remember the days when we were so small we slept in one cot, four hands twisting above our heads, seeing the world from exactly the same viewpoint,” July – who narrates the majority of the novel – tells us.

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