APOSTASY, pictured, is the story of a family living in the Manchester suburbs who adhere to the Jehovah’s Witness strand of Christian Fundamentalism.

Ivanna (Siobhan Finneran) and her daughters Luisa (Sacha Parkinson) and Alex (Molly Wright) are followers who hand out copies of The Watchtower, attend prayer meetings and knock on doors to help save souls.

But this tight-knit, inward-looking and essentially sheltered family bond is questioned when older sister Luisa looks outside the accepted truths she has been brought up to believe – leaving her mother and sibling with the fierce choice of either shunning her as their community leaders say they must, or questioning what bonds are stronger.

Director Daniel Kokotajlo grew up as a Jehovah’s Witness and this film has the type of insights you imagine you’d only get if you had actually been there. It is a powerfully written, moving, non-sensational drama.

• Has the long hot summer hit an already-under-pressure cinema industry? With online streaming already changing our viewing habits, the good weather and other factors such as the World Cup have also not helped get us past the ticket booths.

The biggest seller, The Last Jedi at £73m in takings, was out at Christmas, so there is hope yet.

Cinema operators will be hoping summer treats such as Mission: Impossible – Fallout, Ant-Man and The Wasp (out next week) and a new Disney film about Christopher Robin and Winnie the Pooh will boost takings – that, and a good August downpour.