After a stunning 4th season, big credit to the show's writers for putting together another great season, definitely on par for the most part, but this finale felt a little too convenient and underwhelming.
Chase has been built up to be one of Dexter's greatest villains, a match for him both physically and mentally. The episode starts off well with it seeming like Chase has the upper hand, leading Dexter into his trap and promising a great confrontation.
That never really happens though, with Dexter finishing off Chase with a quick stab to the foot and choke. Big anticlimax and a trap the show has fallen into before (Season 3 and, to an extent, season 4).
The Quinn storyline also seemed to end far too easily, its not really explained how Dexter's blood analysis gets Quinn completely off the hook, let alone wrap up the murder case entirely and seemingly drop Quinn's suspicion. Hopefully this wont all be forgotten come season 6.
Lumen's departure felt a bit forced too, seemed the writers just needed an excuse to write her out of the show, which is disappointing as she could have has potential as a part of season 6. Hoping she'll be back at some point.
It's hard not to be disappointed with this finale, but in all it was a decent end to a great season that wrapped up most of the storylines, leaving things pretty much back to where they started for whatever comes next!