Hannah's deadly secret is closer to being revealed, and on this week's episode of Dexter, "Do the Wrong Thing", everyone's favorite Dark Passenger begins to search for the clues needed to add her to his collection. But is Hannah (Yvonne Strahovski) as guilty as Dexter thinks?
Wayne Randall killed himself a few episodes ago, but the new bodies Miami Metro recently discovered has Dexter believing that his one-time adolescent accomplice, Hannah, is actually behind the murders. Though there's not much evidence to currently prove it, Dexter does have a few leads pointing in her direction. Fortunately, a new face may be able to aid in the search.
Sal Price (Santiago Cabrera), a crime writer who has written about Wayne Randall in the past, shows up in Miami to check out the re-opened case. Price has been researching Randall's case for many years, so he knows much more about Hannah than simple Internet searches will provide. After speaking with Prince about Hannah, the novelist hints that Hannah has enough skeletons in her closet to garner her own book. With this information, Dexter now believes he's on the right case.
Meanwhile, Isaak Sirko still sits in prison, looking for a way to get out and seek revenge on Dexter. Originally Quinn was tasked with helping Sirko out with his predicament (through an unwanted, under-the-table money exchange), but he ultimately turned him down, not wanting to go back to being "dirty" – in any way. Unfortunately for Quinn, his recent love affair with Nadia, a dancer who works for Siko, has made him vulnerable to persuasion. Using Nadia for trade/threat, Sirko's right-hand-man, George (Jason Gedrick), forces Quinn to make the blood evidence against Sirko disappear. But at least he also gets the girl.
Elsewhere, Deb is still attempting to keep her brother's identity undercover – which won't be easy with LaGuerta (still) researching the Bay Harbor Butcher, attempting to clear Doax's name. The more LaGuerta looks into the Butcher case the more questions she asks – questions that Deb can only shoot down, as the answers would lead to Dexter's secret being revealed.
As the episode comes to an end, one of the first major storyline twists of the season is revealed. With Dexter believing he has enough evidence to justify killing Hannah, his Dark Passenger kicks in to finish the job. After setting up an elaborate killing room in a greenhouse, Hannah is secured to the table, and Dexter is about to kill her. But he can't. Instead of killing Hannah, Dexter stabs the knife next to her head. Dexter then, surprisingly, releases her from the table, and the two of them bring the episode to a close with an impromptu sexual interaction.
Dexter returns Sunday with "Chemisty" @9pm on Showtime. Check out a preview of next week's episode below: