LOGLINE: Shawn and Gus must prove a pathological liar is telling the truth in order to stop an assassination plot.
SYNOPSIS: Shawn and Gus are at the police station when the cops bring in Ryan Bainsworth for murder. Ryan's hands are covered in blood but he insists he's innocent. Juliet tells them they've arrested Lyin' Ryan, a notorious compulsive liar who has called in countless tips only to lead the cops on wild goose chases. It looks like this time Ryan actually committed a crime himself. Shawn and Gus follow Juliet to the observation room, where they listen to Lassiter questioning Ryan on the murder of his super in his apartment. Ryan claims that he asked his super to fix his disposal after clogging it with cinnamon sticks and lemon wedges from a marinade and to check the pipes because the polarity is off and the water drains counterclockwise. When he got home he found his super bloody on the floor and tried to revive him. He insists the real culprits are actually two hired assassins. He tells Lassiter that the night before, he was in a restaurant eating special twice-fried fries, when a car crashed through a window across the street. As he turned to look, he overheard a guy with curly q's on his face talking to his companion about killing someone with his belt buckle. Obviously, the assassins realized he overheard them, came to kill him and got his super instead. When Lassiter, who isn't buying any of this, asks how they would know how to find him, Ryan admits he put up flyers around the neighborhood in an attempt to find them and stop them. The cops are incredulous but Ryan is desperate, saying that if they don't believe him someone else is going to die. Fortunately, Shawn sees that this time Lyin' Ryan is telling the truth.
Shawn, knowing all liars lies are based in a kernel of truth, and not wanting an innocent man to go to jail, starts his investigation with the fries. At the restaurant, Shawn and Gus discover Ryan was not only telling the truth about the fries, but also about the car crashing through the window across the street. The waitress also confirms the presence of two threatening looking guys in the corner, and remembers they ordered a beer and a cup of hot water with cinnamon sticks and lemon wedges. The hostess confirms that one of the men had a handlebar mustache – curly q's on his face – and a gun on his belt. Lastly, the valet tells them the men exchanged a bag of cash. Realizing that since Ryan was telling the truth about the hit men, he might be telling the truth about the assassination plot and someone's life could very well be in danger. But Chief Vick, having gone down this road with Ryan too many times, refuses to let them speak to Ryan unless they have concrete proof. Shawn and Gus head to Ryan's apartment where they see the super's blood sprayed across the wall. If Ryan had killed his super, the blood would have been all over his clothes, not just his hands. Ryan was telling the truth about just trying to revive him. They have to find the assassins and since the only way to do that is with Ryan's help, Shawn and Gus bail him out of jail.