Miami Metro. Dexter checks on the real estate listings over the phone, then hands in his blood report. Dexter must've been one of those people who could write an entire term paper the night before it was due. No wonder Quinn hates him so much. Dexter's cop friend shows up and says they found the van he's looking for by a nearby diner. Dex uses that info to narrow down the real estate listings. He finds the place he's looking for then darts for the elevator, blowing past Masuka. Deb catches him by the elevator and they both commiserate about being at their wits' end. Then, off-camera, there comes a terrible screech. "DEEEEBRA MORRRGAN!" It's that tragic old informant woman. Or, as Deb describes her to Dex, "Dad's old fuck-buddy." Throw another one on the list of phrases I never want to say out loud. DVO tries to sound profound about uncovering Harry's secrets while Dex himself is all "Peace!"
So the awful tragic woman, Valerie, apologizes to Deb for being so harsh in her assessment of Harry. She says Harry dumped her for another informant and it still hurts. Okay, they needed one of these slags for a second appearance and they opted against Adrienne Barbeau? That's weird. Anyway, Deb asks if Val knows the name of this other woman. She doesn't, but she starts to talk about how she basically stalked and terrorized this woman after the fact. Before the story goes anywhere interesting, Masuka calls her back to the bullpen with news.
Angel and LaGuerta flirt by the elevators for the half-second it takes Masuka and Deb to approach them with the news: Christine's DNA results are in: she's related to Trinity. Is she ever!
Cut to Dexter, feverishly searching this empty house for signs of Arthur or the boy. None. But in the backyard, he uncovers a bomb shelter. He scrambles inside, and we see he's at the right place. Train set, record player, fast food wrappers. Arthur doesn't tidy up nearly as well as Dexter does. This must offend Dex on an OCD level. So Harry shows up for perhaps his most pointless appearance of the season. I'm not even gonna gloss over it like I normally do, because you people need to know: "1960s Miami. Cuban Missile Crisis. Irony is, places like this were meant to keep people safe." It gets worse! Dexter: "I hate irony." WOW. All-time low for Harry, there. Dex spots the half-eaten ice cream and realizes he just missed them.