Guest Starring: Cary Elwes (Pierre Despereaux), Peter Oldring (Corporal Robert Mackintosh), Ed Lauter (Deputy Commissioner Ed Dykstra), Liam James (Young Shawn)
Co-Starring: Andrew McIlroy (Stockwell), Nicholas Carella (Hotel Clerk), Darren Williams (Gallery Owner), Jonathan Holmes (Maitre d'), Jordana Largy (Female RCMP Constable), Joshua Dixon (RCMP Office Assistant), Donovan Cerminara (Male RCMP Constable), Salvatore Sortino (Driver), Mark Donnelly (Male Singer), Paul Andrich (Balloon Man), Max Fomitchev (Mime)
Co-Starring: Liam James (Young Shawn), Sage Brocklebank (McNab), Holly Dignard (Nyna Phillips), Kevin McNulty (Chad Wiswall), Ted Whittall (Dick Cheney), Ryan Kennedy (Garvin), Carmen Moore (Rosa), Billy Mitchell (Warren Clayton), Ross Douglas (Officiant), Fred Henderson (Flying Instructor), Tariq Leslie (Driver)
Written By: Saladin K. Patterson
Directed By: Michael McMurray
Ep: 50
High Noon-ish
Guest Starring: James Brolin (Hank Mendel), Brent Sexton (County Sheriff Becker), Liam James (Young Shawn)
And: Jim Beaver (Stinky Pete Dillingham)
Co-Starring: John Tench (Deputy Tripsy), Lynda Boyd (Miss Annie), Marc Gaudet (Tourist Husband), Juliet Flint (Tourist Wife), Russ Ball (Bartender)
Written By: Kell Cahoon
Directed By: Mel Damski
Ep: 51
The Devil is in the Details... and in the Upstairs Bedroom
Guest Starring: Tim Conlon (Father Bard), Alexandra Krosney (Lucy Ryan), Liam James (Young Shawn)
And: Ray Wise (Father Peter Westley)
Co-Starring: Carlos McCullers II (Young Gus), Aleks Holtz (Cameron), Chilton Crane (Mrs. Ryan), Melanie Bray (Agatha), Eva Allan (Mary), Thomas J. Potter (Cop)
Written By: Bill Callahan
Directed By: John Badham
Ep: 52
Shawn Gets the Yips
Guest Starring: Dink O'Neal (Dr. Manning), Liam James (Young Shawn)
Special Guest Star: Stephen Lang (Mr. Salamatchla)
Co-Starring: Sage Brocklebank (McNab), Craig March (Tim), Melissa Robertson (Waitress), Crystal Balint (Reporter), Igor Ingelsman (Petrovich), Charles Siegel (Dr. Erlich), Dwayne Bryshun (News Anchor)
Written By: Kell Cahoon & Bill Callahan
Directed By: Tawnia McKiernan
Ep: 53
Bollywood Homicide
Guest Starring: Rachael Leigh Cook (Abigail Lytar), Sendhil Ramamurthy (Rajesh "Raj" Singh), Azita Ghanizada (Mina), Madhur Jaffrey (Dadi), Lisa Ray (Sita), Liam James (Young Shawn)
Guest Starring: Kenan Thompson (Joon), Jaleel White (Tony), Tony Todd (Detective Moses Johnson), Liam James (Young Shawn)
And: Kurt Fuller (Woody the Coroner)
Special Performance of the Psych Main Title Theme By: Boyz II Men
Co-Starring: Sage Brocklebank (McNab), Ecstasia Sanders (Chelsea), Demord Dann (Leonard Callahan), Andrew Wheeler (Mr. Tully), Chris Shields (Minister), Charles Zuckerman (Armed Assailant #1), Kenji Maeda (Tech Geek)
Written By: Saladin K. Patterson & James Roday
Directed By: Steve Surjik
Ep: 55
Let's Get Hairy
Guest Starring: Joshua Malina (Stewart Gimbley), Tom Wilson (Butch Zielinski), Larisa Oleynik (Willow Gimbley), Jessalyn Wanlim (Polexia Li), Liam James (Young Shawn)
With: David Naughton (Dr. Ken Tucker)
And: Deanna Dunagan (Myrtle)
Co-Starring: Carlos McCullers II (Young Gus), Derek Lowe (Manager), John Stewart (Red), Rob Carpenter (Neck), Peter Schaad (Truck Contest Announcer), Drummond MacDougall (Well Dressed Man), Kristina Barr (Germaphobe Woman), Dustin Schwartz (Young Man), Elisa King (Young Woman), Kyra Leroux (Pippi Longstocking), Jakobe Jenkins (Pouty Lipped Boy)
Written By: James Roday & Todd Harthan
Directed By: Andrew Bernstein
Ep: 56
Shawn Takes a Shot in the Dark
Guest Starring: Michael Rooker (Garth Lawnmore), Liam James (Young Shawn)
And: John Hawkes (Rollins)
Co-Starring: Sage Brocklebank (McNab), Sarah Edmondson (Gina), Devon Weigel (Molly), Howard Siegel (Senior Mechanic), Barbara Ellison (Mrs. Nusbaum)
Written By: Andy Berman
Directed By: Mel Damski
Ep: 57
You Can't Handle This Episode
Guest Starring: John Cena (Ewan O'Hara), Rachael Leigh Cook (Abigail Lytar), Liam James (Young Shawn)
And: Robert Patrick (Major General Felts)
Co-Starring: Sean Rogerson (Lieutenant Wallach), T-Roy Kozuki (Private Tuke), Michael Kopsa (Government Official), Jordan Becker (Private Holbrook), Daniel Bacon (Corporal Lejsek), Michael Karl Richards (Entrance Guard), Jenn Griffin (Desk Sergeant), Dexter Bell (Patrolling Officer), John Kralt (Private Starks), Hector Johnson (Prison Officer)
Written By: Andy Berman
Directed By: Mel Damski
Ep: 58
Thrill Seekers and Hell Raisers
Guest Starring: Steve Howey (Derek), Stacy Keibler (Jessica Martino), Liam James (Young Shawn)
With: Sarah Shahi (Ruby)
And: Kurt Fuller (Woody the Coroner)
Co-Starring: Carlos McCullers II (Young Gus), Bradley Stryker (Stu), Pablo Silveira (Charles Lucas), Matt David Johnson (Brian Sampson)
Written By: Saladin K. Patterson & Kell Cahoon
Directed By: Mel Damski
Ep: 59
A Very Juliet Episode
Guest Starring: Arnold Vosloo (J.T. Waring), Craig Sheffer (Federal Marshal Daniel Wayne), Josh Braaten (Scott Seaver)
Guest Starring: Bruce Davison (Walter Snowden), Miguel Ferrer (Fred Collins Boyd), Sandra Hess (Svetlana Progoyovic), Liam James (Young Shawn)
And: Chris Sarandon (Ashton Bonaventure)
Co-Starring: Alex Zahara (Zenuk), Al Miro (Sal), Marcus Hondro (Vito)
Written By: Steve Franks & Andy Berman
Directed By: Stephen Surjik
Ep: 62
The Head, the Tail, the Whole Damn Episode
Guest Starring: Jeri Ryan (Dr. Kimberly Phoenix), Michael Hogan (William Tanner), Liam James (Young Shawn)
And: Kurt Fuller (Woody the Coroner)
Co-Starring: Sage Brocklebank (McNab), Stephen Holmes (Reporter #1), Benita Ha (Reporter #2), Ross Tweedale (Fisherman)
Written By: Steve Franks & Tim Meltreger
Directed By: Matt Shakman
Ep: 63
Mr. Yin Presents
Guest Starring: Liam James (Young Shawn)
With: Jimmi Simpson (Mary)
And: Ally Sheedy (Mr. Yang)
Special Guest Star: Rachael Leigh Cook (Abigail Lytar)
Co-Starring: Sage Brocklebank (McNab), Christopher Turner (Yin), Beverley Turner (Waitress), Melanie Yeats (Female Guard), Jane Stanton (Female Patron), David Attar (Nestling Man), Chantal Forde (Nestling Woman), Sharon Bell (Mary's Mother), Scott Anderson (Kid With Plane)
