Valkyrien (C4, Sunday) is the hot new Scandi-noir series, which is being billed as Norway’s answer to Breaking Bad. In this case, the anti-hero having his mid-life crisis is a brilliant surgeon called Ravn (Sven Nordin). He has become disenchanted with The System because the fancy hospital where he works won’t let him use the potentially life-saving treatment he has devised on his dying wife.