After Dexter leaves Miguel's house, he is shown driving alone, but the next shot is Dexter arriving at Rita's house with Rita and the kids and Rita says that Dexter grabbed her and the kids out of Miguel's house so fast and had been grinding his teeth the whole way home, implying all four of them were in the same car.
When Yuki is talking to Deb in the bullpen, the strands of hair on the side of Yuki's face alternate between hanging loose around her face or being tucked back behind her ears.
(To Camilla, on her deathbed)Dexter: I want you to know that you were right about my brother. But there's something else, I killed him.
Camilla: It's good you did.
Dexter: Blood at the scene belonged to Albert Chung. DNA matched his sample in our database. Odds are 170 million to one that it's anyone but Albert Chung.
Ellen: It won't hold up.
Dexter: You do know what odds are?
Ellen: The jury won't. Not when I get done discrediting you and your chain of custody. I think we all know how easy it is to plant evidence and, well... You look the type.
Dexter: (voice over) Do I see sheets of plastic in your future?
Dexter: Hey, Deb.
Deb: What?
Dexter: Are you gonna bring a date to the wedding?
Deb: I don't know, Dex. I might be too busy picking up pieces of Anton's skin to even be there.
Dexter: So you're a "maybe"?