When Gus's pharmaceutical company forces him to quit Psych, Shawn tries to salvage the partnership by taking a case for the company vice president, who claims that his house is being haunted.
Shawn believes that a murder has taken place at his and Gus's high school reunion...but has a hard time getting anyone to believe him, as he's unable to come up with a suspect, a victim, or a motive.
Shawn and Gus try to infiltrate the tight circle of Dutch "The Clutch" Jenkins, an aging daredevil, after his son claims that someone is sabotaging his father's stunts.
When Henry's biggest arrest gets released from jail on a technicality, Shawn is hired to to fix it before his dad can take matters into his own hands. When Henry finds out, Psych has to do things '70s style to make things right.
A safety inspector is murdered on an offshore oil rig. Chief Vick's sister is a Coast Gaurd Commander investigating the crime. Soon, Vick and her sister clash over the jurisdiction of the case and also the services of the Psych agency.
Juliet goes undercover as a roller derby girl. Gus studies at all moments for an important exam. Shawn works with Juliet and attempts to flatter her multiple times.
When Gus is taken hostage inside the Santa Barbara Savings and Loan Bank, Shawn becomes the gunman's chief negotiator in the hopes of saving his best friend.
A little girl asks Shawn and Gus to help get Santa out of jail. They get Santa out, then realize Santa and the girl are con men planning a big heist. Gus's sister Joy is in town, and she wants to see Shawn romantically again.
Shawn and Gus are hired by April MacArthur, an attractive marine biologist, who suspects that a recently released sea lion's death resulted from foul play and thinks wildlife television host Randy Labayda may be involved.
Shawn and Gus must clear Lassiter's name in the face of overwhelming evidence when he is the prime suspect in the murder of an arrestee-turned-state witness.
A football player's severed foot is found. Shawn and Gus join the football team to solve the case. Shawn discovers the players have a behavior clause in their contract.
Every lie is built on a kernel of truth. This time, compulsive liar Ryan, who is notorious for calling in tips and sending the department on wild goose chases, is telling the truth about the assassination plot he overheard in the restaurant.
Fun riff on Friday the 13th with a Jason wannabe who attacks a woman at her home one stormy night after she opens the fridge to a red, paint-dripped note in her fridge stating "I see you". Sean and Gus's old youth camp is being reopened and bizarre things are found in the lakeside there.
Serial killer Mr. Yin Yang who murdered 6 victims in 1995 resurfaces to play his cat-and-mouse clues games as he did with police officers back then. He has never been defeated and chooses Shawn as his next opponent and the clues come fast and furious to save a young woman. Each clue has to do with something in Shawn's past. Shawn also attempts to rekindle an old high school romance.
