Following the death of her mother, Cass is falling to pieces – a fact that this adaptation of an inventive stage play explores through the device of having two actors simultaneously playing the same character. Norah Sadava and Amy Nostbakken wrote the play and jointly star as Cass; Nostbakken also contributes the film’s haunting and rather lovely score. I wonder if the dual performance might have had a more forceful impact in the stage incarnation; nevertheless, the film is undeniably potent in its account of the shattering force of grief.

• Available in virtual cinemas and on demand