Dexter - Season 6 Finale - Major Spoilers

This guy has been right before and it's all pretty detailed but as always take it with a pinch of salt.

Batista is trying to get Quinn transferred, since he's been effin up so much lately. Quinn told Batista that he spoke with his union rep and he can just claim that he's got an alcoholic and if he gets help they can't get rid of him.

No sadly there wasn't many Louis moments His internship at the lab is pretty much over. He asks Musuka if there is any way he can stay on as a lab assistant, and Musuka tells him in his best Yoda voice that he "finish his training he must" or something to that effect but says he'll send him stuff every once in awhile to keep his dick either hard or wet, one or the other

Travis is shocked to find out that Dexter is alive, Dexter tells him that he can't kill Harrison "the lamb" and he has to kill Dexter first or he won't complete his work before the eclipse/"world end" Travis asked Dexter if he has any of his needles with him and tells him to inject himself.

Dexter agrees to inject himself with one of his needles if Travis puts Harrison on the elevator, which Travis does. Dexter appears to inject himself and pass out. Travis hovers over him to kill him and then Dexter knocks Travis out, and somehow manages to get a toddler dressed as a lion and a Travis out of the building with no one noticing.

what was the scene we saw in the promo where she tells Dexter she loves him?
It was at the beginning of the episode. Dexter gets home from his ordeal at sea which by the way HE DID NOT SWIM to shore. Anyways, Deb comes into Dex's apt and is like all like "OMG we got a report that your boat washed up on shore" something to the effect of "thank god you are okay, I love you" Dexter actually says "I love you too" and Deb seems surprised and I think she says "really?" and for a moment I thought she might kiss him..

[in the last 60 seconds] Debra actually sees Dexter stab Travis in the chest, and then Dexter sees Deb.
...in the abandoned church. Deb asked Dex earlier in the episode to do a final forensic sweep of the church. Dexter had mentioned to Jaimie when handing off Harrison that he had to work on a crime scene for Deb. So I think Deb must've dropped by Dexter's after talking to her therapist and Jaimie told her that Dexter was at some crime scene...and low and behold Deb meets Dex's dark passenger.
Oh yes!It's his typical kill scene. He's got his rubber apron on and Travis is all plastic wrapped.

Source: drmello