Frederick Fitzell is living his best life—until he starts having horrific visions of Cindy, a girl who vanished in high school. After reaching out to old friends with whom he used to take a mystery drug called Mercury, Fredrick realizes the only way to stop the visions lies deep within his own memories, so he embarks on a terrifying mental odyssey to learn the truth.
Unfortunately the movie Flashback is not yet available on HBO Max.
| Art | David Lewington | Set Designer |
| Visual Effects | Wojciech Zielinski | Visual Effects Supervisor |
| Production | Christopher MacBride | Executive Producer |
| Production | Morgan Emmery | Executive Producer |
| Costume & Make-Up | Jennifer Lantz | Set Costumer |
| Production | Kabeer Baig | Executive Producer |
| Sound | Rob Bertola | Sound Designer |
| Sound | Mark Zsifkovits | Sound Re-Recording Mixer |
| Sound | Michael Baskerville | Sound Re-Recording Mixer |
| Production | Jean-Charles Levy | Executive Producer |
| Production | Christina Kubacki | Executive Producer |
| Sound | Christian T. Cooke | Sound Re-Recording Mixer |
| Camera | Dave Sheridan | Camera Operator |
| Production | Lee Kim | Producer |
| Production | Russell Ackerman | Executive Producer |
| Directing | Christopher MacBride | Director |
| Writing | Christopher MacBride | Writer |
| Production | John Schoenfelder | Executive Producer |
| Art | Jennifer Morden | Production Design |
| Editing | Matt Lyon | Editor |
| Production | Brian Campbell | Line Producer |
| Production | Millie Tom | Casting |
| Art | Adriana Bogaard | Art Direction |
| Sound | Anthony Scott Burns | Music |
| Art | Fred Espina | Art Direction |
| Costume & Make-Up | Sarah Millman | Costume Design |
| Production | Dan Clifton | Line Producer |
| Camera | Brendan Steacy | Director of Photography |
