Lindsay Leikin

Lindsay Leikin is the main villainess from "Psy vs. Psy," episode 2.03 of Psych.

She was played by Bianca Kajlich.

Lindsay Leikin is a psychic advisor for the Treasury Department, and she served as the partner for Special Agent Lars Ewing on a counterfeiting case. Unbeknownst to Ewing, Lindsay had found the counterfeiter, Stephen J. Grabinski, but instead of turning him over, Lindsay decided to become his partner. She was encountered by Shawn Spencer in the beginning of the episode, only for Shawn and Gus to be surprised that she's a psychic (a real one, unlike Shawn). During the case, Lindsay used her actual connection to Grabinski to give an accurate physical description (scar on one side of his face and a diamond earring), not only continuing to show up Shawn, but telling him that she plans to expose him as a fake.

However, when Shawn correctly points out that one of Grabinski's counterfeit bills used at the car dealership was actually real, Lindsay decided to coerce Shawn into working together with her. It was revealed that the real bill had to be used because Grabinski was running out of fake ones, and he went to his hotel room to make more. Shawn discovered that the counterfeiter was making $500,000 worth of bills, much to the shock of Lindsay, who incorrectly guessed $50,000. The shock was due to their arrangement that $50,000 would be the limit, and after a passport was found, it was uncovered that Grabinski planned to leave the country. After manipulating her way into sleeping with Shawn, Lindsay left early and confronted Grabinski about his plans, with the argument ending with the villainess shooting and killing her partner. After his body was found, Lindsay placed her hands all over the body to cover her tracks.

By the episode's climax, Shawn had figured out Lindsay's true role and confronted her with the facts as she and Ewing were on their way back to Washington. Lindsay attempted to dismiss Shawn's claims, only for Shawn to prove his case by revealing that Lindsay's case was full of money. At that moment, the evil Lindsay held Shawn at gunpoint; declaring that she's escaping. She was thwarted when Ewing's stenographer sent her own luggage wheeling towards her, causing Lindsay to trip and fall and allowing Ewing to subdue and arrest her.