"Yang 3 in 2D" is the sixteenth and final episode of the fifth season of Psych, and the 79th episode in the series overall. It is the third and last in a trilogy, which began with "An Evening with Mr. Yang" (3.16) and continued with "Mr. Yin Presents..." (4.16). The episode originally aired on December 22, 2010. Its title pays homage to the increasing number of film sequels to be released in 3-D.The Yin/Yang trilogy comes to a close as Shawn and Gus race to save a woman kidnapped by Mr. Yin.