Deb's at her apartment, researching Laura Moser. The money quote? "Laura Moser is survived by her two sons, Brian and Dexter."
Back at lockup, Dexter ends up the beneficiary of Our Overcrowded Penal System ™ (tee hee, "penal") and gets let out early. Dexter checks the clock and VOs that there's a chance Arthur may still be out cold. But before he can jet outta there, the guard informs him they did him the "courtesy" of informing his wife. Hello, Rita! And Rita's Patented Face of Disappointment! On the ride home, DVO laments how disappointing Rita makes him feel like a shit. ("Disappointing Rita," while a shitty Michael Caine movie, could really have been the subtitle of Dexter Season 4.) Rita's actually less naggy than usual, bringing up the smashed security light, punching out Elliott (which she admits she liked) and now this. She just wants to understand what's up with him. So Dexter falls back on what worked for him earlier this season: Lying by way of the truth. He opens up: "Sometimes I'm just going along and everything seems okay, and then this darkness creeps in and takes over." Rita evenly says it makes him sound crazy, but she doesn't think he is. She puts a reassuring hand on his. She drops him off at the parking garage, and he promises to be right behind her.
Once Rita is out of sight, Dexter breaks into a run. Time's running out on that sedative. He opens the van door, and...nobody. Empty. At least his envelope full of Arthur's cash is still in its hiding place. Still, a distressing development.
Even more distressing for the Mitchell family, who are home pretending everything's fine, per usual, when Arthur barges in the front door. Sally leaps up like her ass just caught on fire, but Arthur has no time to notice the fear he inspires in his family. He demands any and all of her jewelry and cash, immediately. Her wedding ring, too. Sally hesitates to give that up, so Arthur starts to pry it off her finger. At this, Jonah leaps to his mother's defense, which puts Sally in peacemaker mode, so she voluntarily gives up the ring. He then demands the money Rebecca is keeping behind her headboard (don't think he doesn't know). Jonah finally speaks up and demands to know what Arthur did. Arthur shoves him against the wall and tells him to start packing. He stomps off into the rest of the house. Jonah wants Rebecca and his mom to leave Arthur, right now. "This is our chance," he begs his mom. "He's in trouble." Sally says they'd only live in fear. Jonah thinks they already do.