At Casa de Lightman, which has a nice pond in the backyard, Ellen calls her mom's new boyfriend a loser, and says she knows her dad agrees, despite his protests, because his eyes did the thing. Like father, like daughter! When Cal starts to inquire into her plans for the night, Ellen makes Cal swear that he won't use any covert science to find out what she and Dan are doing tonight. So while she goes to finish getting ready, Cal swings open the door and asks Dan point-blank, "You gonna try to have sex with my daughter tonight?" He seems pretty proud of himself for that one. We don't see Dan's answer.
Foster questions Congressman Weil about the club, which he denies ever going to, and his activities the night in question, which he totally makes up, as proved by the fact that he can't recite them backwards. The team reviews the tape later, and sees the hand-to-the-head shame gesture we saw earlier on Clinton. None of them can figure out why he's so ashamed, since he has no wife, and he isn't religious. Then Cal gets a flash of insight, and calls up the footage of James from his questioning. James rubs his forehead, for shame, then they zoom in on his very dilated pupils, which indicates lust. Cal and Foster go to ask the Coles if James had a sexual relationship with Susan, but they continue to deny everything. Cal loses his cool, but Foster steps in and convinces them to help in her psychiatrist way. Finally, Mrs. Cole goes and gets the photographs they removed from James' room before the police searched it. They're all photos of Susan, mostly taken from the bushes outside her home. Cal asks Mr. Cole if he ever talked to James about sex, and Mr. Cole says he told James it was a major sin, right before they read Bible verses together. ...Great. Way to create a ticking timebomb.
Cal shows the stalker photographs to James, then shows him a crime scene photo, showing Susan's body reclining on the couch. They're pretty much identical. Cal asks James if Susan tempted him, and James gives in, saying that he lost control that day, and that he had no idea Susan was dead when he went inside her house. He was about to call 911 when the police arrived. Unfortunately, this is not proof -- in fact, the stalker photos are more proof against James, so Hutchinson has James hauled away to his cell, telling Cal that he knows what happened at the Pentagon, and threatening to have the Justice Department look into every case he's ever worked on.
Back at Lightman HQ, Torres brings Foster's husband into the room, where he apologizes for being late, saying he had to work. After the Fosters leave, Torres reveals that she could tell Mr. Foster was lying about working late, and wonders why Cal didn't say anything. Cal changes the subject to the congressman, and Torres reveals that he sees a girl at the club named Melissa every Friday night. Which means it's time for Torres to go undercover, as a woman shopping for an escort for her boyfriend. She manages to get out of Melissa that she doesn't really like it there, that she has a regular on Friday nights, and that she seems to get happy just thinking about that regular. You can tell the emotion is real because of the eye wrinkling.