Got through the night agent season 3. Firstly, huge improvement from season 2. Felt it was a bit slow at the start, I wasn't really feeling it for near enough the first half but then it picked up a lot.
Ending was a bit odd in that it did absolutely nothing to set up season 4 which has been confirmed and even though some things were dissapointingly, completely glossed over at the end, season 3 storyline was definitively finished.
Suspect this is down to Netflix's trigger happy cancelling policy, better not to leave things on the table if it doesnt get renewed and you at least have a 3 season show with an ending of sorts.
Season 4 is going to have to introduce a lot of new characters for whatever story they go with though and that makes me skeptical of season 4, high chance it drops off again.