In preparation for a shotgun wedding before the birth of Baby Guster, Shawn and Gus go rogue in an attempt to track down Selene’s estranged husband, as Lassiter grapples with the future of his career.
Unfortunately the movie Psych 3: This Is Gus is not yet available on HBO Max.
| Production | Chris Henze | Executive Producer |
| Directing | Steve Franks | Director |
| Production | Dulé Hill | Executive Producer |
| Crew | Owen Walstrom | Stunt Coordinator |
| Art | David Willson | Production Design |
| Writing | Steve Franks | Characters |
| Sound | John Robert Wood | Original Music Composer |
| Sound | Adam Cohen | Original Music Composer |
| Editing | David Crabtree | Editor |
| Production | Julie Ashton | Casting |
| Costume & Make-Up | Michelle Hunter | Costume Design |
| Art | Santino Barile | Property Master |
| Camera | Scott Williams | Director of Photography |
| Art | Ksenia Markova | Assistant Art Director |
| Production | Ritch Renaud | Location Manager |
| Production | Janelle Reyes | Co-Producer |
| Art | Brant Lindroos | Set Decoration |
| Camera | Harvey Fedor | Key Grip |
| Lighting | Scott Clark | Gaffer |
| Production | Michele Greco | Producer |
| Art | Dan Lambert | Construction Coordinator |
| Art | Peter Ochotta | Art Direction |
| Production | Steve Franks | Executive Producer |
| Writing | Steve Franks | Writer |
| Writing | James Roday Rodriguez | Writer |
| Production | James Roday Rodriguez | Executive Producer |
