It's fair to say that in comparison to Dexter's peak in seasons three and four, this tends to fall short when it comes to that feeling of not being able to wait another week to find out what happens. Season five was an all around good season that had to deal with a main character's death, and this season sort of stays in that safe zone, albeit with some pretty good kill and gore scenes.
The storyline of the Doomsday Killer wasn't bad, but knowing who the killers were from the get-go and having them prove anonymous and elusive to Dexter for most of the season just wasn't the same level of suspense and excitement as the last two seasons where Dexter was directly involved with Trinity and Lumen.
The single worst thing about this season is the bizarre storyline of Deb developing feelings for (her brother) Dexter; even if he is adopted it doesn't make it any less off putting. The single best thing about this season is the finale - it's fairly obvious where most Dexter finales are going to wind up, but just like in season four there's an extra special twist right at the end of the last episode that will have to be dealt with for a large portion of the next season. This sole twist is going to change the premise of Dexter and set up the endgame for the last two seasons.
Like I said, this isn't the best season of Dexter and has some lagging episodes that almost feel like filler just to get us to the all important end point, but this is still miles ahead of most other dramas on TV today. Here's to an unbelievable season seven!