The Bridge: spoiler-free review as Saga Noren returns for season four

As Scandinavian crime drama The Bridge returns to our screens for its final season, here's a spoiler-free review of episode one...

There was a time when The Killing's Sarah Lund ruled the Scandi-noir roost with her Faroese wool jumpers and almost pathological need to hunt down Denmark's worst criminals.

But then along came Saga Noren, the idiosyncratic Malmö detective in The Bridge, complete with her own set of hallmarks: leather trousers, Porsche 911, a tendency to get changed in front of surprised colleagues, and a complete lack of emotional awareness (to the extent that many viewers have come to interpret her as having Asperger's syndrome).