This rivetingly tense Bafta-winning drama crackles with raw energy. Its third series is its finest yet – and is rapidly becoming one of the greatest TV series in existence

This rivetingly tense Bafta-winning drama crackles with raw energy. Its third series is its finest yet – and is rapidly becoming one of the greatest TV series in existence

‘One of the BBC’s highest quality dramas of recent times,’ one fan wrote