Peter Graystone: A sensational performance by Nicola Walker, refusing to seek closure after her teenage son goes missing. But The Unbelievers is an unsatisfying play. The point of it is that nothing changes for her, so leaping back and forth over 7 years it doesn’t climax, just stops. A convincing vicar though.

A sensational performance by Nicola Walker, refusing to seek closure after her teenage son goes missing. But The Unbelievers is an unsatisfying play. The point of it is that nothing changes for her, so leaping back and forth over 7 years it doesn’t climax, just stops. A convincing vicar though.