Peter is briefing the whole office on the investigation of David Siegel's murder. Since the murder, 15 days ago, only 1 person was seen leaving the crime and they are still unidentified. Everyone will go back to their normal assignments. Clinton asks Peter if Neal will stay in house arrest, and if they want to use him, they can't keep in there.
Neal and Mozzie are talking in Neal's apartment, discussing David's death. Neal feels guilty, but Mozzie was trying to make him feel better. Neal goes back into the office, and Peter tells him that he is going to be his handler again. Their first case will be an accounting firm, when a man walks into the lobby saying he needs to confess to a crime.
A previous criminal, Griffith, that Peter had dealt with was the man who came in. He told Peter that he was trying to clean up his act, for the sake of his son, but that he heard about a security vault that had $2 million in cash, Kaplan Securities. He figured how to break in and was on his way to Grand Central where he was hiding the rest of the money, when he got hit by a cab. He told him he was also working with someone else, but didn't remember who.
Griffith was acting funny, so Clinton and Peter discussed all the meds Griffith was carrying around with the money, and looks at the bottles, all prescribed by Dr. Summers. Clinton contacts the officers at Grand Central, where he said the rest of the money is, but there was nothing in the lockers. While Peter was looking at the money, he realized they felt funny. Under the backlight, they saw they were marked, meaning that he stole stolen money.
Peter and Neal go to Kaplan Securities where the fault was broken into. When they got in, the man they talked to had no idea they were broken into, saying no one had reported missing items. However, he refused to let them see the vault.
They leave Kaplan, and go to a park. While sitting discussing what to do, Neal fashions an employee badge out of random items he has on him. They return to Kaplans, pretending to be superiors, and try to hack into the office, sending the young worker into another room. They find the vault that the man broke into, and it was registered to Nightowl Holdings.
Back in the office, Peter finds out that Nightowl Holdings is a dummy corporation. They find out that the address for the corporation is a warehouse that belongs to a previous criminal named Jacobi. Peter goes to question him, but Jacobi gives him attitude and doesn't cooperate. As Peter is leaving, he sees a high school hat that Jacobi is wearing.
Peter and Neal head to the university to see the Doctor who prescribed the meds to Griffith. Dr. Summers specializes in work with previous criminals and tries to help them. Neal approaches her and says that he is a criminal and that her work is groundbreaking, and that he really wants to talk with her. She dismisses him, but Peter comes up, saying what a high profile criminal he is, so she quickly changes her mind.
The next day Neal goes to meet wit Dr. Summers. Their interaction is very aggressive, she keeps pressing him, saying he doesn't want to change, that he likes being the way he is. After word association, Neal asks for his diagnosis. Dr. Summers says that he is a sociopath, excelling at deceit and manipulation. Neal starts to ask her questions, but then starts to feel funny. He looks at his glass. Dr. Summers put a truth-telling drug in his drink, and he blacks out. Dr. Summers wakes him up, telling him she did a hypnotherapy and he wouldn't wake up.
He returns to the office to tell Peter he has no recollection of their discussion, and he may have told her everything. They realize that Dr. Summers knew who Neal was because of Griffiths. After going to the FBI, Griffiths returned to Dr. Summers to talk to her. Meanwhile, Clinton finds out that the high school hat that Jacobi was wearing had the mascot of the Nightowls, the same name as the dummy corporation.
Back at home, Neal is worried and is being comforted by Mozzie. Mozzie tells him in order to remember what he told Dr. Summers, he has to go into the same state as when in the discussion. Mozzie concocts a "Goodnight Cinderella" and starts to question Neal. Once the questioning starts, they realize Dr. Summers knows the FBI doesn't have anything. Neal becomes aggressive, offends Mozzie, and then sneaks out to Peter's house when Mozzie is in the other room.
When he shows up at Peters, he is acting very weird, so Peter sits him down. Neal says he has things to tell him. Peter asks about Siegel, but Neal, unconvincingly says he doesn't know anything. As he is about to probe him further, Mozzie walks in and tell Peter what happened. They continue to question Neal, and he tells them that Dr. Summers made a phone call while he was under the drug. Neal is able to remember the number, its Jacobi's number!
The next day Clinton and Peter go to see Griffith at home, but he is acting funny. He motions that someone is in the house, holding his son hostage. They pretend to leave, and Jacobi comes down the stairs with a gun at the son's head. Peter and Clinton reveal themselves, and take Jacobi into custody.
Peter says that Dr. Summers gave Jacobi and Griffith the drug to do the heist, and was trying to make them take each other out, so no loose ends would be there.
Neal does to Dr. Summers office, saying he needs another session. Neal asks her where the money is, telling her that the drugs will take effect soon. She says thats impossible because she poured the water herself. Neal says its very easy to reseal plastic. They bring her back to the office, after getting a confession on tape. Of course she doesn't remember, and that it won't hold up in court. Peter says that she got the drinks mixed up since she was probably trying to drug Neal.
They decide not to press charges against Griffith. Peter says the case isn't closed because even though they knew were the money is, when they went to retrieve it, it wasn't there.
Neal gives Mozzie the cash from the heist, trying to make up for all he has lost. He says he likes doing it again, and thinks he is going to return to his old ways.