Spoiler alert: the following is full of spoilersI like the show, Dexter, a lot and thought that the previous season finales were really great. However, this season I found the finale to strain credibility and leave too many threads unresolved.

For the second week in a row, Dexter manages to escape from capture rather easily. After being disoriented after the car crash, Dexter is easily captured by Jordan Chase but somehow he managed to secret a rather large knife in his clothes. The next time we see him, Dexter’s hands are bound and it makes no sense that Chase didn’t search him well enough to find that large knife.

Later, Deb comes upon Chase’s body while Dexter and Lumen are cleaning knives behind the plastic curtain. Why would they clean the knives before cutting up Chase’s body? Surely they would do all the cleanup at one time when they had done all the dirty work. For story telling purposes, the body has to be there for Deb to see and Dexter and Lumen have to be doing something to put them on the other side of the curtain but it could have been more realistic. For example, put a sink on the other side of the curtain and have them washing blood off their faces and hands from the fight and kill and that would make sense in explaining why they were away from the body.

At the end of the show it seems that both the barrel girls case and Liddy’s murder have been wrapped up and they can have a sweet couples montage in the park but are they really?

Deb gets credit for “cracking” the barrels girl case but discovering the cabin didn’t really add any useful information to their case. They are still missing the banker’s body, Chase is in the wind and they have no hard evidence linking him to the crimes. If Deb’s vigilante theory didn’t pan out then they’ve got nothing. The only potentially useful piece of evidence is the stolen car that Dexter crashed in the camp but that seemed to have disappeared (they didn’t show Deb seeing it when she drove in).

As for Liddy’s murder why was Quinn left off the hook so easily just because Dexter reported that the blood on his shoe wasn’t a match? The cops had been suspicious of his behaviour and why would go away so easily? His fingerprints were on the van. He didn’t have an alibi (since he was at the van at the time of the murder). Etc. Etc.

To end on a positive note, I thought that Deb’s decision to let victim 13 and her vigilante boyfriend go sets things up very well for upcoming seasons. She will be tormented for breaking the law and becoming a “bad” copy. Dexter, who knows her secret, will be put in the untenable position of watching her suffer or revealing his own secret to her in the hope of easing her mind.