Gus's favorite reality show, American Duos, comes to Santa Barbara. One of the judges is being harassed by a stalker so he hires Shawn and Gus to go undercover as contestants to protect him.
The remains of a dead man are discovered on the beach. Shawn believes the man found was bitten by a Tyrannosaurus Rex. At first the police think he's crazy, but when the body is identified as a palentologist, Shawn and Gus are put on the case.
The FBI hires their own psychic to help search for a counterfeiter. Vick, Lassiter and Juliet work together to prove that Shawn, their psychic, is better than the Feds'.
Shawn tracks down Lassiter's car, with little difficulty, after it's stolen. But discovers that there's more to the situation than meets the eye, Shawn calls Gus back from vacation to help with the investigation.
Gus and Shawn's childhood nemesis, now a horse jockey, asks the duo for help in discovering why his horses never win. But the investigation develops into a murder case after a jockey dies while racing.
A restaurant critic is murdered and a chef is the main suspect. Shawn and Gus take the case. Meanwhile, a misunderstanding with Gus' uncle forces Gus to play the part of psychic detective.
When a couple of genius teenagers claims one of their teachers is a murderer, Shawn and Gus become guest lecturers at a prodigy school. They soon discover the kids' imaginations might not be so wild after all.
Chief Vick hires Shawn and Gus to find her a new nanny. They want to be put on a burglary case, but she gives that to Lassiter so they begin the nanny search. While interviewing, they discover that their case might actually coincide with Lassiter's.
Juliet asks Shawn and Gus for help in capturing an accused murder who escaped from her. They track the man down, but soon discover he is innocent and they try to find the real killer - but things are complicated by a bounty hunter.
When Shawn and Henry are invited to have Christmas dinner with Gus's parents, Bill and Winnie Guster, the yuletide cheer is interrupted by a murder. A neighbor is found dead and all the evidence points to Gus's dad as the culprit. Evidence leads the police into arresting Gus's mother as well, so Shawn and Gus vow to get them out of jail.
When a groom disappears the day of the wedding, Shawn becomes determined to prove he's not everything he claimed to be for his new client, the last person on earth he'd ever expect to take a case from – Gus's wife.
A missing persons case from a posh retirement community turns into a family affair when Shawn and Gus must team up with Henry to solve the case.
Shawn and Gus search for a killer on the set of a Spanish telenovela.
Shawn and Gus discover there's more to a local brotherhood than funny hats and handshakes when their incoming leader is found dead after a secret ceremony at the lodge.
It's Fashion Week in Santa Barbara, and all around town it's models, parties, and a possible death by electrocution. Shawn and Gus go undercover as male models to investigate the murder of a prominent designer.
Following the trail of a counterfeiter, the "Feds" show up in Santa Barbara with their own version of Lassiter and their very own "Shawn," spawning a rivalry and causing our cast to ban together for the first time to save the integrity of the department and prove who has the better psychic.