Chief Vick calls Shawn and Gus to the station after a handful of old convictions get overturned. They have to reopen all the investigations and need Shawn's help.
When Randy's mother marries a guy much younger than her he gets worried. When they go to some kind of couples retreat, he asks Monk and Sharona to go and keep an eye on her. So to go in they pretend to be married.
When an inmate is poisoned to death hours before he's due to be executed, Monk is brought in to solve the case and finds himself as the prison's newest resident.
Monk and his colleagues travel to New York City to interview someone connected to Trudy's murder. While they are waiting, Monk helps solve the murder of the Latvian ambassador.
A blackout puts half of San Francisco in the dark for a few minutes. When the police discover it wasn't an accident, Monk gets involved to try and figure out why.
Karen Stottlemeyer films a documentary of Captain Stottlemeyer's division. Despite the Commissioner's objections, Monk helps solve the case of a headless corpse, a fatal fire at a wig factory, and a hat thief all in one fell swoop.
A mob boss needs Monk's help to figure out who murdered some members of the family. Monk reluctantly takes the case when the FBI offers to help get him reinstated in exchange for the information he gathers.
Sharona takes a break from Monk so that she can concentrate on her creative writing class, but gets caught up in a twisted murder plot that causes her to question her sanity. Meanwhile, Monk is distracted by Sharona's replacement, who is determined to fix him.
Monk goes undercover at a department store to investigate the mysterious death of a popular store employee. In the process he also gains valuable insights into the life of his former partner.
Vick calls Shawn and Gus in after a group of fast moving and highly organized thieves pull a smash and grab at a department store. It is the third such hit in a month and the cops have no leads.
Gus leaves Shawn waiting in the car while he goes inside a bank to make a deposit. He's only in there a few minutes before a woman spots a gun in the jacket pocket of another customer.
After Shawn and Gus help a little girl get a mall Santa out of jail in time for Christmas, they realize their clients are con men who have a big score planned.
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 conspiracy.
There's a thunderstorm in Santa Barbara that has been causing the electricity to flicker on and off, but that doesn't stop Lassiter from making the bust of his career.
Arson Inspector Morgan Conrad comes to the police for help investigating a building burned down under what she believes to be suspicious circumstances.
Shawn and Gus are at the police station when the cops bring in Ryan Bainsworth, a notorious compulsive liar, for murder. Ryan has called in countless tips only to lead the cops on wild goose chases.
The Yin Yang Killer, a serial killer who was active when Henry was a cop then went silent, is back and wants to toy with the department again, this time singling out Shawn as his primary playmate.
Shawn and Gus are on the slopes on their ski vacation in Whistler, British Columbia when Shawn spots wanted international art thief Pierre Despereaux (Cary Elwes).
When a billionaire crashes his small plane in the woods, Shawn and Gus join the search to find the wreckage, but they arrive only in time to hear his last words - he was murdered.
When strange things start happening at Old Sonora Town - a simulated Old West tourist attraction - that threaten to shut it down permanently, Lassiter enlists Shawn and Gus' help to uncover the truth.
