REVIEW Unforgotten (S4 E4/6)

It has not been the best week for the profile of the British police in the real world, following the melée that marred Reclaim The Streets’ Clapham Common vigil in memory of murdered Sarah Everard. So, as usual, we look to the fictional world inhabited by DCI Cassie Stuart (Nicola Walker) and DS Sunny Khan (Sanjeev Bhaskar) to…