I wonder if we'll ever find out what writers planned for... (SPOILERS)
So, Martin will no longer be on the show:
http://www.digitalspy.co.uk/tv/news/a576714/the-bridge-series-3-kim-bodnia-quits-as-martin-rohde.html?rss
I know he was going to be in prison, but the guy who killed his son was still used heavily in season 2 despite being in prison. As a result of Bodnia quitting, we won't really get a resolution to how Martin feels about being betrayed and whether or not Saga can live with what she's done to him. Seemed like a set up for a great conflict, as well as drama if she had to come to him and ask for help with her next investigation. Now, nothing... Crud.