David Katz is a world famous magician and he comes to Denver with his group to perform for a charity gala for disabled children. Also there is Perry and Della as all three are supporters of the charity. Kate Ford, an assistant with an arrogant attitude, tells David that she is, from now on, going to do an illusion in which an assistant is raised in a glass coffin only to disappear when the coffin is opened up in the air (while the assistant climbs out before the coffin is raised.) After a one night stand with David, Kate is pregnant and she blackmails David with this. David and his wife Judy can't have children so that comes as a double blow to them. However Kate, with her attitude, creates much hatred at her from the rest of the group. At the gala, the glass coffin is raised but when it opens Kate's dead body falls to the ground - strangled.
Unfortunately the movie Perry Mason: The Case of the Glass Coffin is not yet available on HBO Max.
| Directing | Christian I. Nyby II | Director |
| Writing | Erle Stanley Gardner | Novel |
| Sound | Dick DeBenedictis | Music |
| Sound | Fred Steiner | Main Title Theme Composer |
| Editing | Carter DeHaven | Editor |
| Production | Paul Staheli | Production Designer |
| Camera | Robert Seaman | Director of Photography |
| Production | Billy Ray Smith | Producer |
| Production | David Solomon | Producer |
| Production | Joel Steiger | Co-Executive Producer |
| Writing | Brian Clemens | Writer |
| Production | Dean Hargrove | Executive Producer |
| Production | Fred Silverman | Executive Producer |
| Production | Billy Ray Smith | Unit Production Manager |
| Directing | Gary Grillo | First Assistant Director |
| Directing | Gail Joyce Fortmuller | Second Assistant Director |
| Production | Reuben Cannon | Casting |
| Production | Carol Dudley | Casting |
| Costume & Make-Up | Ronn Rynhart | Costume Designer |
| Costume & Make-Up | Kelly Andrew King | Costumer |
| Costume & Make-Up | Sharon T. Brunn | Costumer |
| Costume & Make-Up | Kathleen A. Saunders | Costume Assistant |
| Costume & Make-Up | Patti Dallas | Makeup Artist |
| Costume & Make-Up | Dionne Smith | Makeup Artist |
| Costume & Make-Up | Emily Katz | Makeup Artist |
| Costume & Make-Up | Rosanne Bigelow | Hairstylist |
| Costume & Make-Up | Kathy MacKay | Hairstylist |
| Sound | James Emerson | Production Sound Mixer |
| Lighting | Bradford Lipson | Gaffer |
| Camera | Jerry Jencks | Key Grip |
| Camera | Lee Nakahara | Camera Operator |
| Camera | Douglas O'Kane | First Assistant Camera |
| Production | Pamela Knapp | Production Accountant |
| Directing | Jeff Glasser | Script Supervisor |
| Production | Andrea Nachman | Production Coordinator |
| Art | Charlie Helms | Set Decoration |
| Art | Susan MacDonald-Petersen | Property Master |
| Production | Karen Beard | Location Manager |
| Art | Randy Holland | Construction Coordinator |
| Crew | Gene Hartline | Stunt Coordinator |
| Crew | Gil Talamantes | Transportation Coordinator |
| Crew | Dave West | Transportation Captain |
| Production | Donna Colabella | Production Executive |
| Production | Robert Benevides | Production Consultant |
| Crew | Dennis Smith | Legal Services |
| Production | Hal Harrison | Executive In Charge Of Post Production |
| Editing | Victoria Jensen | Assistant Editor |
| Production | Haya Tawatao | Post Production Coordinator |
| Art | Wayne Fitzgerald | Main Title Designer |
| Sound | Eileen Horta | Supervising Sound Editor |
| Sound | Robert L. Harman | Sound Re-Recording Mixer |
| Sound | James L. Aicholtz | Sound Re-Recording Mixer |
| Sound | Allen L. Stone | Sound Re-Recording Mixer |
| Sound | Ted Roberts | Music Editor |
| Production | Mike Moder | Executive In Charge Of Production |
