Last night I watched the very last episode of Spiral and feel like I've lost good friends. I've binged watched all 8 series and understand there will be no more. Felt the same way when I finished Montalbano so will now have to search out another - maybe The Bridge?
4 series of The Bridge, excellent drama, start with series one as you get to know the central characters, and the fascinating lead actress. you won't be disappointed.
I know what you mean. Got into Spiral rather late, about three series ago, and found it totally convincing - so well directed you couldn't see the joins. Very well acted, especially by Thierry Godard as Gilou: he just was him, didn't seem to be acting at all. But all good things come to an end, and I think the actors (Caroline Proust, in particular) wanted to move on.
All three series of Code 37: Sex Crimes is still available. From Belgium and in Flemish, it has that same ensemble feeling that Spiral has.
Sometimes rather explicit and violent but sometimes very funny.