Old thread but I just watched the second series of The Bridge this past week and thought making a whole new thread was unnecessary.
The finale of series 2 was phenomenal.
Spoiler:
Gertrud being revealed as the true villain (I loved this because Oliver was so obvious and he hadn't been around as long so his reveal was underwhelming), and then tricking Viktoria into injecting herself with the virus.
Still, I thought they'd get to Viktoria in time and find some way to combat the virus, her actually dying came as a total shock. And then Pernille straight after.

I was never massively satisfied with series 1's resolution since the killer was someone we only met in episode 7 (I do love Jens as a character though and really enjoyed his continuing series 2 appearances in prison), but series 2's ending was just brilliant.
Saga has become one of my very favourite TV characters, Sofia Helin is brilliant. Can't wait for series 3.