Celeste en Leeann vormen een identieke tweeling. De enige die de zussen van elkaar kan onderscheiden is hun moeder. Wanneer zij sterft, weet Celeste zich geen raad meer. Ze is kapot van verdriet en gaat steeds minder om met Leeann. Een dag voordat de zussen hun yogastudio openen besluit Celeste er even tussenuit te gaan met de charmante Sergio, een man die ook aan yoga doet. De onstabiele Leeann voelt zich in de steek gelaten en bedenkt een duister plan.
Nee, helaas is Twinsanity nog niet beschikbaar op Netflix in Nederland.
| Directing | Buz Wallick | Director |
| Production | Paige Lauren Billiot | Producer |
| Production | Marie Halliday | Executive Producer |
| Production | Michael Moran | Executive Producer |
| Production | Fernando Szew | Executive Producer |
| Production | Buz Wallick | Producer |
| Writing | Julian Broudy | Writer |
| Crew | Panagiotis Konstantakopoulos | Cinematography |
| Sound | Todd Haberman | Music |
| Editing | Dave Parker | Editor |
| Production | Neely Gurman | Casting |
| Art | Jere Sallee | Production Design |
| Art | Megan Balthazor | Art Direction |
| Costume & Make-Up | Chanèle Casaubon | Costume Design |
| Costume & Make-Up | Adriana Bena | Key Hair Stylist |
| Costume & Make-Up | Kristen Koskell | Assistant Makeup Artist |
| Costume & Make-Up | Hannah Schenck | Makeup Department Head |
| Production | Shawn O'Brien | Unit Production Manager |
| Directing | Anthony Arrigo | Second Assistant Director |
| Directing | Joshua Lou Friedman | First Assistant Director |
| Directing | Ryan Romania | Second Second Assistant Director |
| Art | Ariane McDonald | Set Dresser |
| Art | Michael Thompson | Property Master |
| Sound | Lorita de la Cerna | Foley Artist |
| Sound | Rob Embrey | Sound Post Production Coordinator |
| Sound | Colin Hart | Sound Mixer |
| Sound | Alexander Jongbloed | Foley Editor |
| Sound | Benjamin Maus | Boom Operator |
| Sound | Brian S.M. Wroth | Dialogue Editor |
| Visual Effects | Robert Crisp | Visual Effects |
| Visual Effects | Janna Daniel | Visual Effects Coordinator |
| Visual Effects | Jesse Daniel | Visual Effects |
| Production | Elle Jackson | Administration |
| Visual Effects | Dan Jones | Modeling |
| Visual Effects | Nick Siebold | Visual Effects |
| Visual Effects | Dustin Solomon | Visual Effects Supervisor |
| Crew | Tim Mikulecky | Stunt Coordinator |
| Camera | Mike Dumin | Second Assistant Camera |
| Lighting | Andrew Frick | Electrician |
| Camera | Jay Harmon | Grip |
| Camera | Carlton Hudson | Key Grip |
| Camera | Michael Moriatis | Still Photographer |
| Camera | Arturo Ochoa | First Assistant Camera |
| Camera | J.D. Slater IV | Second Assistant Camera |
| Camera | Kyle Sorvig | Best Boy Grip |
| Lighting | James Swartz | Gaffer |
| Lighting | Lauren Ussery | Best Boy Electric |
| Camera | Keith Woolf | Best Boy Grip |
| Production | Shelby Holt | Casting Assistant |
| Costume & Make-Up | Brianna Quick | Costume Supervisor |
| Editing | Mark T. Osborne | Digital Intermediate Colorist |
| Crew | Tori Letzler | Additional Music |
| Crew | Erica Cox | Driver |
| Crew | Lou Chavira | Craft Service |
| Production | Claire Edwards | Production Assistant |
| Production | Patricia Gutierrez | Production Assistant |
| Directing | April McQuarrie | Script Supervisor |
| Crew | Evan Richardson | Set Medic |
| Production | Teddy Wynne | Production Assistant |
