Mr. Yin Presents...
| "An evening with Mr. Yang" | |
|---|---|
| Psych episode | |
| Episode no. | Season 4 Episode 16 |
| Directed by | James Roday |
| Written by | Andy Berman and James Roday |
| Production code | 4016 |
| Original air date | March 10, 2010 |
| Guest appearance(s) | |
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"Mr. Yin Presents" (stylized as "Mr. Yin Presents...") is the sixteenth and final episode of the Fourth season of Psych, and the 63rd episode in the series overall. It premiered on March 10, 2010 on USA Network in the United States. The episode serves as the season 4 finale and is the sequel to the third season's finale, "An Evening with Mr. Yang". It is an important installment in one of the series' few story arcs. A third and final installment of the Yin/Yang series, entitled "Yang 3 in 2D", aired as the fifth season finale.
Shawn and Gus are attending a triple-feature of famous Alfred Hitchcock films, including (according to a playbill) The Birds, The Man Who Knew Too Much, and Psycho. After squeezing down a row of other patrons, Shawn finally is able to sit down, 20 minutes into Psycho. After finally finishing the films, they exit the theater and bump into Mary Lightly (Jimmi Simpson), one of the key figures in capturing Mr. Yang a year earlier. He takes them to a diner, where they discuss a new book written by Yang. Mary insists that, according to Yang's account of the events leading up to her capture, it was impossible that she was working alone. There had to have been a Yin. Shawn and Gus are skeptical, and leave the diner. Shawn rereads Yang's book but falls asleep. The next morning he and Gus are called to a crime scene. The waitress who had served them their pie at the diner had been found dead. Shawn notices that her body was arranged into a Yin/Yang symbol.
Shawn, Gus, Detective Lassiter, Detective O'Hara, and Mary arrive at the diner, where they find a pie marked with the Yin/Yang sign. Inside is a crossword clue, decoded by Officer McNab (Sage Brocklebank) to mean "Find Me." Mary insists that the events of the past day are the work of Yin. Shawn, Gus, and Mary visit Yang (Ally Sheedy) in prison. She reveals that she did have a partner, and that her partner is even more psychopathic than she is.
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