Shawn and Gus investigate the whereabouts of a mysterious, masked vigilante named The Mantis, who is trying to take down a local drug syndicate called The Caminos. The SBPD is also trying to take down The Camino syndicate, however The Mantis always seems to be one step ahead of everyone's game. Joey McIntyre and Miles Fisher guest star.
Role: Young Gus
While on the haunted house ride at Santa Barbara's Scare Fest, Shawn and Gus witness a murder and are soon led to believe the person who committed it is the ghost of a man who fell to his death at Scare Fest 13 years ago.
Role: Young Gus
Shawn has to face serious competition when a talented criminal profiler named Declan Rand comes to Santa Barbara to help solve the murders of donors on a liver-transplant list.
Role: Young Gus
Shawn and Gus help a prison guard locate his escaped inmates while on a ferry boat headed to the Channel Islands.
Role: Young Gus
When a member of a gang of car thieves turns up dead, Shawn and Gus must infiltrate a drag racing ring to find the killer. Shawn soon finds himself enjoying the fast lane too much, which not only endangers the investigation but also their lives.
Role: Young Gus
Shawn and Gus get themselves hired onto the case when an unstable lawyer claims his assistant was abducted by aliens.
Role: Young Gus
When a woman is found dead with a bottle of pills that are lab trial samples, Lassiter and Gus, who are taking the same tap class, team up to dance their way to catching a murderer
Role: Young Gus
When the daughter of a Chinese Triad family disappears, Shawn and Gus take on the case.
Role: Young Gus
When Shawn and Gus join Gus’ new girlfriend on a rafting trip, a member of the group goes overboard, but Shawn quickly realizes it was no accident.
Role: Young Gus
Shawn and Gus attempt to protect Stewart Grumbley from himself because the poor man believes he may be a sheep-killing werewolf who may soon enough begin killing humans.
Role: Young Gus
When a college girl at a Catholic university commits suicide, Gus and Shawn are brought in because one of the professors at the school believes the girl was demon-possessed.
Role: Young Gus
Shawn and Gus are hired by a childhood friend to find a missing camp counselor who disappeared near their old sleep-away campgrounds. Upon their arrival, spooky activity abounds and they must uncover if the dark past of the abandoned camp has come back to life.
Role: Young Gus
When Shabby the sea lion is found dead after being released into the wild, Shawn sets out to prove it was murder and stumbles onto a bigger mystery.
Role: Young Gus
A surveillance tape from the latest robbery in a string of break-ins leads Shawn to believe that women are the culprits. He futher narrows the suspects down to a local roller derby team and suggests that in order to pinpoint the people responsible, Juliet needs to go undercover as a member of their team. Though it's technically her investigation, Shawn can't help getting involved in the case.
Role: Young Gus
Shawn and Gus investigate the death of a safety inspector aboard an offshore oil rig. The investigation is complicated by the commander of the coast guard, Barbara Dunlap, Chief Vick's sister.
Role: Young Gus
Henry bails on his weekend outing with Shawn, stating that he's too ill to leave the house. Shawn is nowhere near upset until he and Gus catch Henry driving by, clearly not sick at all. Naturally, they follow him and discover he used to be a member of the Monarch Lodge, a clandestine society. They barge inside looking for an explanation and are surprised to find one of the Lodge members lying dead before them. Shawn suspects murder, and in order to conduct an inside investigation, he becomes a member of the society.
Role: Young Gus
Shawn is shocked when he learns that Gus is married after Gus' wife unexpectedly shows up. She asks the men to take on a missing-persons case.
Role: Young Gus
Christmas with the Gusters is ruined when Gus' parents' neighbor is killed, a clue leads Lassiter to look at Mr. Guster more closely. Evidence leads the police into arresting Gus' mother too, and Shawn and Gus vow to get them out of jail.
Role: Young Gus
Shawn and Gus find themselves trying to outwit a bounty hunter when Juliet asks them to find a suspect who escaped from her custody. The problem is, once they find him, Shawn believes his claims of innocence, meaning they not only have to capture him, but prove he's been set up.
Role: Young Gus
Shawn and Gus are put on the case when a food critic is murdered. However, Gus' Uncle Burton is in town, and due to a misunderstanding, Gus must pretend to be the psychic detective to avoid disappointing his family.
Role: Young Gus
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.
Role: Young Gus
Shawn tracks down Lassiter's car with little difficulty after it's stolen. However, Shawn discovers that there's more to the situation than meets the eye and calls Gus back from vacation to help with the investigation.
Role: Young Gus
The discovery of a washed-up body sparks a debate between Shawn and the police, who both disagree as to how the man died. While Shawn believes that the man was killed by a Tyrannosaurus Rex, the police believe the killer is a little less... extinct.
Role: Young Gus
Shawn and Gus go undercover as talent show contestants to investigate a number of failed attempts to kill one of the judges.
Role: Young Gus