Psych: The Musical

The episode begins with a whimsical storybook opening, followed by the opening number. Six years before the events of the episode, Z's play about Jack the Ripper is abruptly cancelled and he is sent to a mental institution. Before the premiere of his play, Z had allegedly set the theater on fire and locked a critic in a back room. After six years, a similar play is in production at a different Santa Barbara theater by its womanizing owner Armitage (Barry Bostwick). Z escapes his mental institution and presumably murdered another man. Psychic Shawn Spencer, his partner Gus, and the Santa Barbara Police Department's Juliet and Lassiter go to the mental institution and elicit the help of serial killer Mr. Yang (Ally Sheedy). While Shawn and Gus are investigating Armitage's new production, the producer falls from the catwalk and dies. At the coroner's office, Woody labels the death a suicide. Shawn suspects that Z's next target is likely Elisa (Brooke Lyons), his muse and a cast member of his original play. Buzz McNab (Sage Brocklebank) is put on guard at Elisa's house, and he notifies Lassiter when he sees a man running through the woods of her property. Lassiter, Juliet, Shawn, Gus, Yang, and her guard rush to the house, where Lassiter and Juliet chase the mysterious man. The man is revealed to be the same man that was thought to have been killed by Z upon his escape from the mental institution. Shawn and Gus see Z inside Elisa's house and break inside. Shawn chases Z out of the house, and upon seeing him face-to-face becomes convinced that Z is innocent. Upon returning to the car, Mr. Yang has escaped as well.

The second act begins with another whimsical storybook opening. During a briefing at the SBPD station, Shawn exits to accept a Skype video call from Mr. Yang. She reveals that he should look again in the mental institution. Shawn and Gus find numerous letters from Z to Elisa hidden inside a bed. Shawn and Gus meet up with Lassiter and Juliet, who are at the scene of Elisa's dead body. When they catch Armitage kissing a cast member at his theater, they chase him until he is hit by an oncoming car. It is revealed that he has had several extramarital affairs, including one with Elisa. After another Skype call with Mr. Yang, Shawn and Gus identify her location as the burnt theater of Z's original production. When they arrive, they find Mr. Yang, who informs them that they have been followed there. A disguised person hangs Shawn by the neck with a rope and stabs Yang with her own knife. When Shawn gets down, he and Gus rush to her side as she dies. She is seen in an afterlife setting with criminal expert Mary Lightly (Jimmi Simpson), who promises he will do his best to help her get into Heaven. Shawn and Gus go to the premiere of Armitage's play to confront a cast member, whom they suspect is the killer. After the cast member is knocked out in the altercation, Shawn dresses in his costume and performs his part in the play. During the performance, he solves the case and trades places with Gus. Shawn chases down Z, who is attempting to kill the true culprit. Lassiter and Juliet arrive at an opportune moment and Z surrenders. Afterwards, the episode has a final storybook sequence that is revealed to be read by Shawn, as he and Gus are pitching to Z (who has been institutionalized) the idea for the events of the story as a play.

"Psych: The Musical" was viewed by 2.23 million Americans during its original airing.[11]

The special received mixed reviews. TV Fanatic's Chandel Charles gave the episode a five stars out of five rating, saying, "This songfest, however, was beyond all expectations."[12] Kevin McFarland of The A.V. Club said that it "feels like only half of an adventure, even after two hours and plenty of references to musical titles" and gave the episode a C rating.[13]

The episode was released on DVD separately from the seventh season on December 17, 2013, just two days after airing.[14] The set features an extended scene, as well as three other Psych episodes with musical themes: "American Duos," "High Top Fade-Out," and "Feet Don't Kill Me Now." Also included is a CD of six original songs.

The special is also included as a bonus feature on the DVD set of Psych: The Complete Eighth Season, along with the extended scene and a new behind-the-scenes feature.[15]

A digital soundtrack album Psych: The Musical (Original Songs and Score) was released on December 16, 2013 on iTunes and other digital music services. The seventeen tracks are as follows:[16]

1. Santa Barbara Skies (5:12)
2. Z’s Lament (1:13)
3. I’ve Heard It Both Ways (3:13)
4. Sleigh Bells and Songs (1:12)
5. (When You’re) Making up a Song (2:02)
6. Often It’s the Opposite (1:42)
7. Into the Woods / I Hurt No One (2:32)
8. Act II Storybook Open (1:07)
9. I’ve Heard It Both Ways Reprise One (1:06)
10. Under Santa Barbara Skies Reprise (2:10)
11. I’ve Heard It Both Ways Reprise Two (0:55)
12. It’s Her (2:12)
13. Promised Land (2:20)
14. Shawn Hears the Theme / The Breakdown (3:41)
15. Gus in the Spotlight (1:04)
16. The Surrender (1:45)
17. Jamaican Inspector (1:47)