|Original run:||July 7, 2006 – March 2, 2007|
|Number of episodes:||Fifteen|
|DVD release date:||June 26, 2007|
Season One of Psych originally aired in the United States on USA Network from July 7, 2006, to March 2, 2007. It consisted of 15 episodes. James Roday, Dulé Hill, Timothy Omundson, Maggie Lawson, and Corbin Bernsen were introduced as portraying the main characters. James Roday portrayed Shawn Spencer, a fake psychic detective who periodically consults for the Santa Barbara Police Department. A DVD of the season was released on June 26, 2007.
Steve Franks served in the position of showrunner after creating the show for USA Network. Michael Engler directed the pilot episode, from a script written by Franks. Various other directors were selected for the subsequent episodes, including Mel Damski and Michael Zinberg, who directed two episodes each. Other directors included James L. Conway, John Fortenberry, Joanna Kerns, John T. Kretchmer, John Landis, Michael Lange, Tim Matheson, Jeff Melman, Matt Shakman, and Lev L. Spiro. Steve Franks wrote six episodes for the season. Andy Berman wrote three episodes, while Kerry Lenhart, Anupam Nigam, John J. Sakmar, and Douglas Steinberg wrote two episodes each. Lee Goldberg and William Rabkin wrote one episode, while series star James Roday contributed to the script of the season finale. The musical group The Friendly Indians wrote and performed the theme song, titled "I Know, You Know".
James Roday was cast in the position of Shawn Spencer, a fake psychic detective. Dulé Hill was awarded the role of his partner, Burton "Gus" Guster. The part of Head Detective Carlton "Lassie" Lassiter was given to Timothy Omundson, and Corbin Bernsen was cast as Henry Spencer. Anne Dudek was given the part of Det. Lucinda Barry. However, the character only appeared in the pilot episode. Maggie Lawson replaced her as Detective Juliet "Jules" O'Hara.
Kirsten Nelson was cast as SBPD Interim Chief Karen Vick. However, the character was only credited as a guest star for the first season. Sage Brocklebank portrayed Officer Buzz McNab in six episodes. In every episode of the first season, a young Shawn Spencer appeared. However, three different actors portrayed him, including Josh Hayden, Kyle Tejpar, and, most notably, Liam James. Julien Hill, Isaah Brown, and, most notably, Carlos McCullers II have portrayed a young Gus. Other notable one-time guest stars included Michael Adamthwaite, Steve Bacic, Lisa Banes, Bre Blair, John Ross Bowie, Alexandra Breckenridge, Tom Butler, Scott Michael Campbell, Christine Chatelain, Colin Cunningham, Don S. Davis, Mayte Garcia, Peter Michael Goetz, Ellie Harvie, Gina Holden, Pascale Hutton, Carlos Jacott, Jolie Jenkins, Richard Kind, Diego Klattenhoff, Thomas Kopache, David Kopp, Dan Lauria, Kris Lemche, Nicole Lyn, Tamara Mello, Debra Mooney, Donnelly Rhodes, Ryan Robbins, Teryl Rothery, Mercedes Ruehl, Chelan Simmons, Kurtwood Smith, George Takei, Keegan Connor Tracy, Michael Weston, Frank Whaley, Ashley Williams, and Shannon Marie Woodward.
|"Pilot"||July 7, 2006||1|
Faced with a headline kidnapping case, the police reluctantly hire Shawn Spencer, the city's newest psychic detective, to assist with the investigation.
|"Spellingg Bee"||July 14, 2006||2|
|"Speak Now or Forever Hold Your Piece"||July 21, 2006||3|
|"Woman Seeking Dead Husband: Smokers Okay, No Pets"||July 28, 2006||4|
Shawn must communicate with the spirit world in order to recover a dead bank robber's stolen cash and save his widow's life.
|"9 Lives"||August 4, 2006||5|
When Shawn believes a suicide is in fact a murder, he keeps himself on the case by insisting he's getting information from the sole witness – the victim's cat.
|"Weekend Warriors"||August 11, 2006||6|
|"Who Ya Gonna Call?"||August 18, 2006||7|
|"Shawn vs. the Red Phantom"||August 25, 2006||8|
|"Forget Me Not"||January 19, 2007||9|
|"From the Earth to Starbucks"||January 26, 2007||10|
When a drunken Lassiter confesses to Shawn that he has doubts not only about his latest case but also about his ability to ever solve a case again, Shawn sets out to secretly prove him right in order to boost his morale.
|"He Loves Me, He Loves Me Not, He Loves Me, Oops He's Dead!"||February 2, 2007||11|
Lassiter sticks Shawn with a case where a man shows up naked at the police station claiming to have been abducted by aliens, but Shawn's investigation soon takes him into an even stranger universe – speed dating.
|"Cloudy... With a Chance of Murder"||February 9, 2007||12|
When a woman sleeps with a beloved local weatherman but wakes up to find him dead, she is charged with his murder. Shawn finds a way into the case by becoming a consultant to the defense.
|"Game, Set... Muuurder?"||February 16, 2007||13|
Before the Psych agency can begin to investigate the disappearance of an up-and-coming tennis star, Shawn must first retrieve Gus from a corporate retreat, and they soon realize things are not always as they appear.
|"Poker? I Barely Know Her"||February 23, 2007||14|
Henry's old friend Bill Peterson refuses to call the police after his wayward son steals from him and then goes missing, which forces Henry to go find help in the last place he ever wanted to visit – the Psych office.
|"Scary Sherry: Bianca's Toast"||March 2, 2007||15|
Shawn and Gus step into a real-life urban legend when they investigate a death suspiciously like the tale of "Scary Sherry", who met her untimely end at the now-haunted Wispy Sunny Pines mental institution.