Jeff Mitchell seems to have it all. He has an interesting and lucrative job, a loving wife, and two amazing kids. Therefore, life is good. However, on one bright day, a cosmic sucker punch comes out of the blue. When Jeff was in high school, unbeknownst to him, he got his girlfriend pregnant. Next, the girl moved away, had the baby, and raised her as a single mother, never telling her daughter, Carlee, who her real father was. However, Carlee's mother recently died in a tragic accident, prompting Carlee to try and uncover the truth. Maybe Jeff is not so lucky after all?
You can now watch Sinister Stepsister online on the following streaming providers in the United States.
| Writing | Adam Rockoff | Writer |
| Directing | John Murlowski | Director |
| Editing | Thijs Bazelmans | Editor |
| Production | Paul Ruddy | Casting |
| Art | Mel Huffman | Production Design |
| Costume & Make-Up | Mariah Murlowski | Costume Designer |
| Sound | David Findlay | Original Music Composer |
| Production | Tom Berry | Executive Producer |
| Production | Sebastian Battro | Executive Producer |
| Production | Barbara Fisher | Executive Producer |
| Production | Breanne Hartley | Executive Producer |
| Production | Jennifer Phillips | Producer |
| Camera | John Murlowski | Director of Photography |
| Production | John Murlowski | Producer |
| Production | Jennifer Phillips | Unit Production Manager |
| Production | Michelle Morte | Line Producer |
| Directing | Nicholas Rogers | First Assistant Director |
| Production | Matt Vodvarka | Production Supervisor |
| Camera | Steven Neel | First Assistant "A" Camera |
| Lighting | Jeremy Guico | Gaffer |
| Camera | Ron Mendez | Key Grip |
| Lighting | Michael Liska | Best Boy Electric |
| Art | Valéria Ramos | Property Master |
| Costume & Make-Up | Sophia Murlowski | Wardrobe Assistant |
| Costume & Make-Up | Brianne Ross | Key Makeup Artist |
| Costume & Make-Up | Ashley Aldridge | Makeup Artist |
| Sound | Nicolás Osorio | Production Sound Mixer |
| Sound | Jaime Tapia | Boom Operator |
| Crew | Milton Ring | Craft Service |
| Production | Jose Polanco | Key Production Assistant |
| Crew | Mary Ann Spaniel | Studio Teacher |
| Crew | Jennifer Phillips | Post Production Supervisor |
| Editing | Eric Babinec | Colorist |
| Sound | Andres Boulton | Supervising Sound Editor |
| Sound | Andres Boulton | Sound Re-Recording Mixer |
| Sound | Jonathan Morgan | Foley Artist |
| Production | Melly Lindsay | Payroll Accountant |
| Directing | Josh Spiegel | Second Assistant Director |