Psych 3: This Is Gus is a 2021 American mystery-comedy film. A direct sequel to the second film from 2020 and the third installment of the Psych film series, based on the USA Network dramedy series of the same name, the film was released on November 18, 2021 to the streaming service Peacock. James Roday Rodriguez, Dulé Hill, Timothy Omundson, Maggie Lawson, Kirsten Nelson, and Corbin Bernsen all reprised their roles from the series and previous two films, with recurring actor Kurt Fuller and previous guest star Curt Smith also appearing. The film was directed by series creator Steve Franks, who co-wrote the script with Roday Rodriguez, and plans to produce three further sequels.^[1]

This article needs an improved plot summary. (December 2022)

Prior to Gus and Selene's wedding and the birth of their son, Shawn and Gus must track down Selene's estranged husband, while Gus is in 'groomzilla' mode. After the recovery, Lassiter works to determine the future of his police career.

On May 13, 2021, Peacock announced the film, with production set to begin in the summer.^[2] On October 9, 2021 at New York Comic Con, it was announced the film would premiere on November 18, 2021.^[3] Along with the returning main cast, Kurt Fuller reprised his role as Woody Strode and Curt Smith returned as himself.

TV Guide rated the film a four and a half out of five.^[4]

Steve Franks has stated his intent for the Psych film series to consist of at least six films, of which This is Gus serves as the third.^[1]