I thought Martin Freeman was great in this and yes, the Wiltshire police were wrong to vilify Steve Fulcher yet they allow rapists and bullies in their own force. He did none of that and the publics opinion should have mattered.
As for Beckys mum, she was brilliant and to be honest, her scream will haunt me forever as its the scream of total devastation.
Sian's mum was a selfish arrogant cow who should have been nicer instead of living in her own dream world. She belittled another woman's pain. No excuse for that.