At home, Rita's feeding baby Harrison when Elliott returns with the kids. They all caught fish, so everyone's happy. Even Astor, which means somewhere in heaven, an angel is crying. Rita says they can eat the fish once Dexter gets home, since that's his kind of thing. But Elliott interjects himself -- innocently or not is up to you -- and says he can easily gut a fish, and while Rita is reticent, they make de facto dinner plans with the kids. So now we know what all that hinting about Elliott and his breakup from last week was leading to.
In Tampa, Arthur pulls the van up in front of a house; Dexter's confused. Arthur bounds up the steps and rings the bell about eight times. The older Asian man who answers isn't interested in what Art's selling, but Arthur presses on with that manic look on his face. "I grew up here," he explains, before pushing past the owner and his wife and bounding up the stairs. Dex follows, all awkward-like (he bows to the owners -- awesome). Once upstairs, Dex sees Arthur has stalled at the bathroom door, all the energy of a moment ago now gone. He explains, as Dexter leads him slowly inside, that this is where it all started, for him; this is where his sister died. He explains how his 10-year-old self was standing in the doorway, watching his sister shower ("it was innocent," he stresses), and she saw him and slipped, falling through the shower door. "The glass sliced her leg," Arthur recalls, as we all connect the dots to the sliced femoral artery in the bathtub killings. DVO relates to Arthur, as they were both "born in blood," metaphorically.