The darkly comic tale of siblings stretched to breaking point has been adapted by Cassa Pancho for Ballet Black. The novel’s author re-encounters her characters on stage

One dead body. Two sisters. Two pairs of yellow gloves. The wiping away of the evidence; one sister efficiently, the other lazily. And in the background, an enigmatic score.

So begins the Ballet Black adaptation of my debut novel, My Sister, the Serial Killer. I have dreamed of it coming to life via various visual mediums – film, TV, as a musical, as a play. Not once did I consider it as a ballet production. And not because I don’t love the medium – in a former life I joined a ballet school, which we won’t dwell on here – but because, in creating this story, I focused heavily on dialogue and a ballet is essentially wordless.