Shawn catches up with the rest of the cops who have found a package from Mr. Yang. The killer somehow managed to get into the building and leave it for them. Mary opens the package to reveal another riddle and stopwatch along with a caged rat. The bottom of the cage is lined with newspaper classifieds that reference Shawn's old cases. Shawn, Gus and Mary are able to piece together the clues that send them to a moving train. Shawn and Gus jump on to find a stack of Polaroids this time, with the riddle and the watch. Shawn puts together the clues to discover Yang is sending them to yet another location, the boardwalk near the Psych office. As soon as they get there, a phone starts to ring for them. Shawn, realizing the phone didn't start ringing until they got there, refuses to answer it, knowing Yang is watching them. He sees movement in their office and takes off, but by the time they get there, Yang is gone, leaving behind a picture of the waitress, bound and gagged, and a hand written message on the back. Mary, whose respect for Yang's ability is now shared by everyone, explains the killer is giving them a second chance to save the waitress. But Shawn refuses to keep playing Yang's game, insisting it's getting them nowhere. He quits the investigation, forcing Mary and the cops to continue on without him.
Back at the police station, the police get a fax from Yang, and, realizing the killer must know Shawn quit, figure out the new riddle is directed at Lassiter who deciphers it to reveal a hotel and room number. Meanwhile, Gus and Shawn, who only pretended to quit the investigation to circumvent Yang's game, head back to the restaurant where it all started. They figure out that Yang used the waitress' car to abduct her, so if they find the car, they find the girl. Shawn calls Lassiter to let him know, but he is already at the hotel and her car is in the parking lot. Shawn and Gus race over there and they bust into the room to find the waitress alive, tied up with a note stuffed into her mouth. Shawn looks around the room and sees the purse Madeleine was carrying earlier at the police station. Yang has exchanged the waitress for Madeleine, forcing Shawn's return to his game.
Shawn deciphers the latest riddle, sending everyone, including Henry, to the drive in theater. Figuring since Yang used his victim's car once, he probably did it again, they start searching the cars for Madeleine's rental. Shawn finds his mother in her car with a laser sighting pointed at the back of her head. He waves the cops off, but Henry is able to duck down behind the vehicle. Lassiter, Juliet, Gus and Mary take off to find the source of the laser but Shawn sees it's a decoy and he and Henry stay behind. When the cops get to the projection booth, they ask Mary to explain the motivation for the fake out, but for the first time Mary is thrown, saying this is not Yang's usual game. Back at the car, Shawn sees that his mother is wired to a bomb. Madeleine is able to indicate Yang's location to Shawn, and, looking over, he is surprised to see a woman holding a detonator, calling him over. Shawn heads over to Yang, while Henry stays behind with Madeleine. When Shawn gets into the car with Yang, she congratulates him for getting there on time and being the first person to win her game. She says she could have killed Madeleine hours ago but she wants Shawn to like her because they will be working together again. The cops now have them surrounded, and Shawn tells Yang it's over, but she replies that she is going to write a book from prison and she wants Shawn to write the forward. She then hands him the detonator and turns herself in. Madeleine, who is now safe, insists Shawn keep his date with Abigail, who has just arrived. Shawn leaves her to get popcorn for their date where Juliet corners him alone. She tells him how impressed she is with him, then, finally cutting through all the complications, asks him out to dinner. A stunned Shawn tells her that her timing is horrible and that he is already out with someone. He then leaves her, retuning to Abigail, finally ready to take her seriously after thirteen years of making her wait.