They wonder if Jesse was killed by his own gun. Sheldon says they found that the prints on the vase match a man named Nick. Stella realizes he is the same person who was at the hospital. Sheldon informs them that Nick provided the publicity for Jesse's performances.

Flack meets with Nick. He says he grew up with Jesse who was his best friend. He says he would create a marketing campaign using the prize money. Nick admits he was at the hotel to celebrate with Jesse and Brooke. He explains he danced, stumbled and grabbed the vase. He says he figured Jesse and Brooke wanted to celebrate alone, so he left.

Stella brings Brooke to the hotel room. She remembers Jesse giving her a glass of champagne to celebrate his win. Stella asks if she remembers Nick, but she says she doesn't think he was there with them. She remembers when Jesse died on the floor. She fought with the killer, pulled off his mask, and tried to hit him with a vase, but he grabbed it. She says she thought the killer was going to help her, but he just left.

Danny reports that he found Jesse and Brooke's fingerprints, but not Nick's. Sheldon says he found the hair sample from the ski mask matches the DNA from the vase fingerprint.

Later, a club holds a memorial for Jesse. Mac and Flack tell Nick they found his DNA on the mask and the fingerprint. Nick says it didn't go down like they think. He confesses he killed Jesse because Jesse asked him to do it.

At the station, Nick says no one will believe him, but insists he is telling the truth. He says it started during the first robbery. He says Brooke was in the alley when Jesse was robbed the first time. He says he was embarrassed and thought he should have saved her. Nick explains Al molested Brooke in front of him while they were being robbed. Jesse said he didn't think Brooke looked at him the same after that. Nick says he was supposed to pretend to rob Jesse to make it seem like he was a hero. During a struggle in the hotel room, the gun went off and killed Jesse. Nick says Jesse told him the bullets were supposed to be non-lethal. Later, Nick panicked after Brooke took off his mask.

Stella tells Brooke about the scheme. She brings her to the station to identify her original mugger. After she points out Al, he is arrested.