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 |
| Writing | Julian Broudy | Writer |
| Production | Fernando Szew | Executive Producer |
| Editing | Dave Parker | Editor |
| Visual Effects | Nick Siebold | Visual Effects |
| Costume & Make-Up | Adriana Bena | Key Hair Stylist |
| Directing | Ryan Romania | Second Second Assistant Director |
| Camera | Mike Dumin | Second Assistant Camera |
| Production | Buz Wallick | Producer |
| Art | Megan Balthazor | Art Direction |
| Camera | Carlton Hudson | Key Grip |
| Production | Marie Halliday | Executive Producer |
| Production | Michael Moran | Executive Producer |
| Art | Michael Thompson | Property Master |
| Visual Effects | Robert Crisp | Visual Effects |
| Production | Elle Jackson | Administration |
| Camera | J.D. Slater IV | Second Assistant Camera |
| Sound | Alexander Jongbloed | Foley Editor |
| Costume & Make-Up | Kristen Koskell | Assistant Makeup Artist |
| Sound | Colin Hart | Sound Mixer |
| Production | Paige Lauren Billiot | Producer |
| Crew | Panagiotis Konstantakopoulos | Cinematography |
| Sound | Brian S.M. Wroth | Dialogue Editor |
| Visual Effects | Jesse Daniel | Visual Effects |
| Crew | Tim Mikulecky | Stunt Coordinator |
| Sound | Todd Haberman | Music |
| Costume & Make-Up | Hannah Schenck | Makeup Department Head |
| Lighting | Andrew Frick | Electrician |
| Production | Neely Gurman | Casting |
| Costume & Make-Up | Chanèle Casaubon | Costume Design |
| Directing | Joshua Lou Friedman | First Assistant Director |
| Sound | Rob Embrey | Sound Post Production Coordinator |
| Camera | Jay Harmon | Grip |
| Visual Effects | Dustin Solomon | Visual Effects Supervisor |
| Art | Ariane McDonald | Set Dresser |
| Art | Jere Sallee | Production Design |
| Sound | Lorita de la Cerna | Foley Artist |
| Camera | Arturo Ochoa | First Assistant Camera |
| Production | Shawn O'Brien | Unit Production Manager |
| Sound | Benjamin Maus | Boom Operator |
| Directing | Anthony Arrigo | Second Assistant Director |
| Visual Effects | Dan Jones | Modeling |
| Visual Effects | Janna Daniel | Visual Effects Coordinator |
| Camera | Michael Moriatis | Still Photographer |
| Lighting | James Swartz | Gaffer |
| Production | Shelby Holt | Casting Assistant |
| Production | Teddy Wynne | Production Assistant |
| Camera | Keith Woolf | Best Boy Grip |
| Crew | Tori Letzler | Additional Music |
| Crew | Erica Cox | Driver |
| Lighting | Lauren Ussery | Best Boy Electric |
| Crew | Lou Chavira | Craft Service |
| Directing | April McQuarrie | Script Supervisor |
| Editing | Mark T. Osborne | Digital Intermediate Colorist |
| Crew | Evan Richardson | Set Medic |
| Costume & Make-Up | Brianna Quick | Costume Supervisor |
| Production | Patricia Gutierrez | Production Assistant |
| Production | Claire Edwards | Production Assistant |
| Camera | Kyle Sorvig | Best Boy Grip |
