Jennifer Shannon is a garage sale shopping expert whose sharp observation skills allow her to uncover valuable antiques, as well as help her local police department investigate crimes. While arranging a charity garage sale event, Jennifer finds a body in the attic of a local residence. While working to crack the case, Jennifer offers support to her loving husband, Jason, whose upcoming birthday has sparked a mid-life crisis. As Jennifer prepares to buy him the perfect gift, she receives an urgent voicemail from Tina, pleading for her immediate assistance. When she responds, the garage sale-expert-turned-sleuth finds herself standing face-to-face with a killer.
Unfortunately the movie Garage Sale Mystery: The Art of Murder is not yet available on HBO Max.
| Production | Jackie Lind | Casting |
| Editing | Lara Mazur | Editor |
| Art | Jill Scott | Production Design |
| Production | Allen Lewis | Supervising Producer |
| Production | Katy Garretson | Supervising Producer |
| Production | Marnie Termuende | Supervising Producer |
| Production | Lori Loughlin | Executive Producer |
| Production | Michael Shepard | Executive Producer |
| Production | Marnie Termuende | Executive Producer |
| Production | Jonathan Axelrod | Executive Producer |
| Production | Alan Ett | Executive Producer |
| Production | Harvey Kahn | Executive Producer |
| Writing | Suzi Weinert | Book |
| Crew | Brett Armstrong | Stunt Coordinator |
| Crew | Jennifer Clarke | Stunt Double |
| Crew | Taylore McEachryn | Stunt Double |
| Production | Catherine Kretz | Production Manager |
| Directing | Claude M. Pavel | Second Assistant Director |
| Costume & Make-Up | Tina Fiorda | Costume Designer |
| Costume & Make-Up | Tory Class | Assistant Costume Designer |
| Art | Jaralin Detienne | Set Supervisor |
| Art | Mark Boyko | Set Decoration |
| Art | Sheldon Feyter | Assistant Set Decoration |
| Art | Ryan Casey | Leadman |
| Art | Nick Nalmpantidis | Set Dresser |
| Art | Sam Stime | Set Dresser |
| Art | John Morstad | Property Master |
| Art | Nicole La Greca | Assistant Property Master |
| Art | Rob Huestis | Props |
| Costume & Make-Up | Courtney Frey | Key Makeup Artist |
| Costume & Make-Up | Kara Alaric | Key Hair Stylist |
| Costume & Make-Up | Amanda Imeson | Assistant Makeup Artist |
| Costume & Make-Up | Amanda Wolski | Assistant Hairstylist |
| Production | Sara Brown | Extras Casting |
| Camera | Jorge Montesi | "A" Camera Operator |
| Camera | Jenna Fuoco | First Assistant "A" Camera |
| Camera | Luke Hylands | Second Assistant "A" Camera |
| Camera | Sean Cox | "B" Camera Operator |
| Camera | Izaiah Kane | First Assistant "B" Camera |
| Camera | Sean Foster | Second Assistant "B" Camera |
| Camera | Ryan Plummer | Still Photographer |
| Sound | Tad Nazar | Production Sound Mixer |
| Sound | Eric Weisner | Boom Operator |
| Lighting | Geoff Dane | Gaffer |
| Lighting | Knesha Yu | Best Boy Electric |
| Lighting | Rayne Holloway | Genetator Operator |
| Camera | Corey Tremblay | Key Grip |
| Camera | Connor Thorpe | Best Boy Grip |
| Camera | Adam Buhler | Dolly Grip |
| Directing | Roderick Dryden Morrison | Third Assistant Director |
| Production | Yale Kussin | Production Coordinator |
| Production | Laura Obenaus | Assistant Production Coordinator |
| Crew | Marnie Termuende | Production Controller |
| Production | Svatia Sakarova | Production Accountant |
| Production | Shary Sison-Paguio | Assistant Accountant |
| Production | Faiza Lalani | Payroll Accountant |
| Production | Geoff Dodd | Location Manager |
| Production | Kelsey Fonda | Assistant Location Manager |
| Directing | Matt Babinec | Script Supervisor |
| Crew | Darcy Davis | Special Effects Coordinator |
| Crew | Spencer Bennett | Special Effects Assistant |
| Crew | Dean Fitzpatrick | Transportation Coordinator |
| Crew | Stefano Chimarios | Transportation Captain |
| Crew | Anastasia Sharpe | Craft Service |
| Crew | Jason Macintyre | Post Production Supervisor |
| Production | Sepideh Merchant | Post Production Coordinator |
| Editing | Blair Scott | Assistant Editor |
| Editing | Michael Jacobsen | Assistant Editor |
| Editing | Jimmy Hsu | Colorist |
| Editing | Gary Shaw | Colorist |
| Editing | Shaun Lang | Online Editor |
| Editing | Kipp Lightburn | Online Editor |
| Visual Effects | Barry Liu | Visual Effects Supervisor |
| Sound | Greg Stewart | Sound Re-Recording Mixer |
| Sound | Jeff Jackman | Sound Re-Recording Mixer |
| Sound | Jeff Jackman | Sound Designer |
| Sound | Roger Morris | Dialogue Editor |
| Sound | Rick Senechal | Foley |
| Sound | Don Harrison | Foley Artist |
| Sound | Ian Mackie | Foley Artist |
| Sound | Valerie Biggin | Music Supervisor |
| Directing | Kristoffer Tabori | Director |
| Writing | Walter Klenhard | Writer |
| Camera | Randal Platt | Director of Photography |
| Production | Harvey Kahn | Producer |
| Sound | Terry Frewer | Original Music Composer |
