Rob Williams, Screw's writer, used to teach in prisons and his richer observations show in the script. He portrays the dark and light with equal conviction.

If Time made prison seem like a descent into hell, Screw portrays it as more akin to a hotel with limited amenities but staff determined that you enjoy your stay.

This is broad and warm and welcoming, with enough of a sharp side to make it worth sticking with.

While the focus is largely on the guards, the most compelling aspect of the pilot involves Stephen (Jake Davies), a prisoner three months shy of his release and the new transfer Dolby (Christopher Fulford).