Just in the room with the TV on and Shetland has come on, don't know much about it but after a couple of months of solid American reality TV 
it has re-ignited my need for some sort of BBC domestic crime drama. Something like Broadchurch, the fall, or the one with James Nesbitt/missing son that was on last year. Is Shetland worth starting from the beginning? Or Doctor Foster? We've been meaning to get round to Luther but don't want something with loads of episodes that would require serious binge-watching commitment.