Christopher and Cathy Dollanganger live together as man and wife with Cathy's two sons who are unaware of the incestuous nature of their parents' relationship. But when a mysterious woman moves in next door and befriends the younger boy, Bart, he begins a strange transformation and displays accusatory behavior towards Cathy and Christopher. When Christopher discovers their mysterious neighbor is, in fact, his mother Corrine Dollanganger, all of the family's long-hidden secrets are revealed in a tragic climax.
Unfortunately the movie If There Be Thorns is not yet available on HBO Max.
| Production | Fern Champion | Casting |
| Sound | Douglas Pipes | Original Music Composer |
| Editing | Mark Shearer | Editor |
| Art | Richard Paris | Production Design |
| Art | Linda Del Rosario | Production Design |
| Camera | James Liston | Director of Photography |
| Production | Harvey Kahn | Producer |
| Production | Richard D. Arredondo | Producer |
| Production | Charles W. Fries | Executive Producer |
| Production | Lisa Hamilton Daly | Executive Producer |
| Production | Rob Sharenow | Executive Producer |
| Production | Tanya Lopez | Executive Producer |
| Production | Dan Angel | Executive Producer |
| Production | Jane Startz | Executive Producer |
| Writing | Virginia C. Andrews | Novel |
| Writing | Andy Cochran | Teleplay |
| Directing | Nancy Savoca | Director |
| Production | Kane Lee | Co-Executive Producer |
| Crew | Heather Laura Gray | Choreographer |
| Crew | Brett Armstrong | Stunt Coordinator |
| Crew | Lisa Chandler | Stunt Double |
| Crew | Ashlea Earl | Stunt Double |
| Crew | Leif Havdale | Stunt Double |
| Crew | Simon Pidgeon | Stunt Double |
| Crew | John Sampson | Stunt Double |
| Production | Allen Lewis | Production Manager |
| Directing | Richard Flower | First Assistant Director |
| Directing | Marijke Richman | Second Assistant Director |
| Production | Richard D. Arredondo | Unit Production Manager |
| Production | Jackie Lind | Casting |
| Costume & Make-Up | Rebekka Sorensen | Costume Designer |
| Costume & Make-Up | Sancha Tatlock | Assistant Costume Designer |
| Costume & Make-Up | Carly McAuley | Costume Coordinator |
| Costume & Make-Up | Jaclyn Charlton | Costume Set Supervisor |
| Costume & Make-Up | Sarah Dalziel | Truck Costumer |
| Art | Janessa Hitsman | Set Decoration |
| Art | Bardia Garshasebi | Assistant Set Decoration |
| Art | Jeff Mennell | Set Dresser |
| Art | Julia Evans | Set Dresser |
| Production | Jon Bloch | Casting Associate |
| Production | Sara Brown | Extras Casting |
| Production | Alex Mcrae | Extras Casting Assistant |
| Art | Clint Novak | Property Master |
| Costume & Make-Up | Jayne Dancose | Makeup Artist |
| Costume & Make-Up | Tana Lynn Moldovanos | Key Makeup Artist |
| Costume & Make-Up | Jenine Lehfeldt | Key Hair Stylist |
| Costume & Make-Up | Riley Harvey | Assistant Makeup Artist |
| Costume & Make-Up | Maria Gleeson | Assistant Hairstylist |
| Costume & Make-Up | Sarah Elizabeth | Special Effects Makeup Artist |
| Camera | Stephen Maier | "A" Camera Operator |
| Camera | Alex Martinez | First Assistant "A" Camera |
| Camera | Sean Cooke | Second Assistant "A" Camera |
| Camera | Bruce Borland | "B" Camera Operator |
| Camera | Scott Antifave | First Assistant "B" Camera |
| Camera | Jay Rego | Second Assistant "B" Camera |
| Camera | James Dittiger | Still Photographer |
| Sound | Steven Weakes | Sound Mixer |
| Lighting | David McClung | Gaffer |
| Lighting | Jacob Bond | Best Boy Electric |
| Camera | James Vinblad | Key Grip |
| Camera | Jim Power | Best Boy Grip |
| Camera | T.J. Sampson | Dolly Grip |
| Sound | Jean-Luc Perron | Boom Operator |
| Camera | Aaron Hadden | Dolly Grip |
| Directing | Paula Antil | Third Assistant Director |
| Production | Nancy McKenzie | Production Coordinator |
| Production | Simon Carrigan | Assistant Production Coordinator |
| Production | Shandi Leadbetter | Second Assistant Production Coordinator |
| Production | Michael J. LeGresley | Location Manager |
| Production | Renee Bella | Assistant Location Manager |
| Directing | Holly Atchison | Script Supervisor |
| Crew | Dale Shippam | Special Effects Coordinator |
| Crew | Dawn Knight | Post Production Supervisor |
| Production | Sepideh Merchant | Post Production Coordinator |
| Editing | Jorelle Miranda | Assistant Editor |
| Editing | Michael Jacobsen | Assistant Editor |
| Editing | Gary Shaw | Colorist |
| Visual Effects | Barry Liu | Visual Effects Supervisor |
| Sound | Greg Stewart | Sound Re-Recording Mixer |
| Sound | Angelo Nicoloyannis | Sound Re-Recording Mixer |
| Sound | Jeff Jackman | Sound Designer |
| Sound | Roger Morris | Dialogue Editor |
| Sound | Don Harrison | Foley Artist |
| Sound | Ian Mackie | Foley Artist |
| Sound | Valerie Biggin | Music Supervisor |
