Season 3 opens with Shawn trying to scare up business by staging a haunting in the home of Gus' boss, who threatens to fire Gus over his antics with the agency. Meanwhile, Shawn's mother (Cybill Shepherd) returns unexpectedly, causing him to renew his strife with his father (Corbin Bernsen).
Murderous intrigue surrounds a high-school reunion when Shawn suspects an alum has been killed. Cybill Shepherd and Rachael Leigh Cook guest star.
Shawn believes a motorcycle daredevil is in danger and talks his way into the performer's inner circle to find out who is sabotaging his stunts.
Shawn, Gus and Henry try to sidestep some unscrupulous raiders when they hunt for buried treasure with a map supplied by Shawn's shifty uncle Jack.
Shawn and Gus investigate a case from the 1970s in hopes of permanently jailing the culprit, who could go free on a technicality.
Vick butts heads with her sister in the Coast Guard over a murder on an offshore oil rig, and Shawn does not ease the situation with his unconventional investigative methods. Jane Lynch and Barry Corbin guest star.
Juliet joins a Roller Derby team to investigate a series of robberies.
Gus is held hostage during a bank robbery, and Shawn must figure out a way to infiltrate the bank and become the gunman's negotiator. Gary Cole and Alan Ruck guest star.
Shawn and Gus help a girl free a mall Santa from jail, only to realize they've been conned by clients plotting a big score. Elsewhere, Gus' visiting sister plans to relive a fling she once had with Shawn. Phylicia Rashad and Keith David guest star as Gus' parents.
Shawn suspects foul play when a sea lion that was released into the wild turns up dead.
Lassiter is accused of murder, so Shawn and Gus set out to prove he's innocent.
The guys investigate a series of arsons in collaboration with a local firehouse.
After the foot of a pro football kicker is found, Shawn and Gus sign up for training camp.
The guys hope to foil an assassination plot by proving that a pathological liar is telling the truth.
The guys investigate the disappearance of a camp counselor who vanished near abandoned camp grounds. The case turns spooky when Shawn and Gus witness strange occurrences that may be connected to the camp's dark past. Justine Bateman guest stars.
An elusive serial killer, Yin Yang, resurfaces after years of hiding and targets Shawn in the third-season finale. Cybill Shepherd and Rachael Leigh Cook guest star.