Showtime has released another preview for season seven of “Dexter,” which returns Sept. 30. The promo, titled The Last Piece, compiles clips spanning the series which could have lead Deborah to the truth about her adoptive brother.

The final scene, of course, is the end of the season six finale, in which Deb walks in on Dexter killing the season’s big baddie, Travis Marshall (Colin Hanks).

No new information is revealed in the trailer, but the Internet is abuzz with spoilers and speculation alike, so we’ve gathered the best (and most accurate) bits for you here.

At Comic-Con, Showtime treated fans to a screening of the first two minutes of season seven’s premiere.

The writers waste no time picking up exactly where they left off, as the clip opens with Deb’s obviously emotional reaction to Dexter’s fresh kill.

At this year’s Comic-Con Carpenter stated, “I think if anything it’s not that she’s shying away from the power and authority she has [as head of Miami Metro], she actually needs it,” Carpenter said. “It’s the one card she has to play and it’s also the one card that will protect and save her. At any second — if I live! — I could tell someone to put cuffs on him and I think [Dexter] knows that.”

Another announcement brought the news that season eight will the the show’s last season. Sara Colleton, executive producer for the show, told TV Guide that the decision to end the show is definite.

“We wanted to end it this year, but the network convinced us that it would be best to do it in two years.,” Colleton said. “In some ways, this is a two-season series-ender. We have worked that out and know where it’s going to end. Next year will definitely be the last year of ‘Dexter.’ Absolutely.”

Colleton also said Deb will learn everything about her brother this season. There will be no more secrets.

“Obviously this whole season we’re going to have great fun playing with every permutation that can be played between Debra and Dexter in their relationship now that this information has come out.,” she said.

In answer to the question on many fan’s minds, Colleton addressed Deb’s newly realized romantic feelings for Dexter.

“It will be explored,” she said. “It has to explored, because one doesn’t come to a realization like that and then completely change. But obviously what she learns is going to affect it, so all of the things that have been the bedrock of Deb’s life get moved around. That’s part of what we hope will be fascinating for our fans, is to watch and see how we play out all of those various interpretations.”

As for new spoilers (reader beware), Lieutenant LaGuerta finds Dexter’s blood slide forgotten at the crime scene, and immediately recognizes it from the Bay Harbor Butcher case. She sees this as a chance to clear Sergeant Doakes’ name, as the case had initially been pinned on him.

Colleton said this will begin quietly, but the clues will eventually lead back to Dexter.

Hall also commented on how Harrison will affect the new season as well as life for Deb and Dexter.

“As Harrison gets older and becomes more perceptive, it gets diecier every day. Deb now has a sense of what she’s dealing with with her brother that changes things as well,” Hall says. “He has someone who’s really encouraging him to face just what he’s trying to pull off as a parent. But Harrison is still in the picture — and very cute.”

Lastly, there are several new cast members in season six.

Ray Stevenson will play the head of a crime syndicate who owns several nightclubs in Miami. Jason Gedrick will play the U.S. manager of all of his clubs. Perhaps catching the most buzz is Yvonne Strahovski.

“She plays this woman named Hannah, who took off from this small rinky-dink Florida town and ran off with this older guy and they went on this wild killing spree,” Colleton told TV Guide. “So when they got caught, she turned state’s evidence on the boyfriend, he went to jail for life and she started a new life. Years later, she’s in her 30s and she will intersect with Dexter. I would say Hannah is a still water that runs very deep and is quite unlike any woman Dexter has ever known.”

TV Guide asked Colleton whether Dexter will die at the series’ end.

“I would never answer that question,” she said with a laugh.

You can see the new promo, titled The Last Piece, below and be sure to watch the new season on September 20th.

I’ll be the first to admit that this teaser shows almost absolutely nothing. Between a few shots of Michael C. Hall and Jennifer Carpenter standing there. followed by some flashy scenes of a knife with blood on it and the symbolic dripping of blood on the detectives shield, almost nothing is revealed about the upcoming season. But it does do one thing, it is building to a new a season that promises to be even more exciting than the last few.

Warning: Spoilers ahead if you haven’t seen season 6.

When we last left Dexter, he was killing the Doomsday Killer in his signature way, but this time he got a little bit sloppy and Deb saw him commit the act. That alone would be earth shattering to the series dynamic between the two characters. However, this ending moments comes off the heels of Deb realizing she is IN LOVE with Dexter, and was on her way to tell him how she felt. It took her a whole season (and 20 odd years I suppose) to come to that realization only for moments later see him kill someone.

But don’t assume the jig is up for good ol’ Dexter. He may be able to get out of this one yet. Seeing as Deb doesn’t know this isn’t a one time thing, she may forgive him after all. She was able to get past her civic duty in season 5 when the revenge killers were out and about (which as we know was Dexter and Lumen.) Though I predict a season of conflicting emotions ahead for both characters.

So, while there isn’t much that we know about the upcoming season we can expect some new info being released with Comic Con around the corner and the new season getting closer everyday.

“Dexter” premieres on Showtime at 9:00pm ET/PT on September 30th and you can watch the new teaser trailer below: