Based on a stage play of the same name by Amy Nostbakken and Norah Sadava, the story follows Cassandra, who is portrayed by the two women, expressing the opposing voices that exist inside the modern woman's head, during a 48-hour period as she tries to organize the affairs for her mother's funeral.
You can now watch Mouthpiece online on the following streaming providers in the United States.
| Editing | Lara Johnston | Editor |
| Production | Patricia Rozema | Producer |
| Writing | Norah Sadava | Writer |
| Directing | Patricia Rozema | Director |
| Writing | Amy Nostbakken | Writer |
| Writing | Patricia Rozema | Writer |
| Art | Zazu Myers | Production Design |
| Sound | Amy Nostbakken | Original Music Composer |
| Production | Maria Martin Stanley | Executive Producer |
| Camera | Catherine Lutes | Director of Photography |
| Production | Martha McCain | Executive Producer |
| Production | Christina Piovesan | Producer |
| Production | Angela Brisbourne | Executive Producer |
| Production | Alex Brisbourne | Executive Producer |
| Production | Martha Ramsay | Executive Producer |
| Production | Jennifer Shin | Producer |
| Production | Kathleen Ramsay | Executive Producer |
| Directing | Winnifred Jong | Script Supervisor |
| Art | Katie Brock | Graphic Designer |
| Art | Khanh Quach | First Assistant Art Direction |
| Art | Roxanne Borris | First Assistant Art Direction |
| Costume & Make-Up | Jessica Panetta | Makeup Designer |
| Sound | Brennan Mercer | Sound Effects Editor |
| Sound | Kevin Swartz | ADR Recordist |
| Crew | Sue Baldaro | Unit Publicist |
| Crew | Jared Raab | Thanks |
| Production | Christopher Richards | Casting Associate |
| Costume & Make-Up | Mara Zigler | Costume Design |
| Writing | Norah Sadava | Theatre Play |
| Sound | Kathy Choi | Dialogue Editor |
| Production | Deirdre Bowen | Casting |
| Directing | Ace McCallum | Third Assistant Director |
| Camera | John Yapp | Grip |
| Sound | Neil McIntyre | Sound Mixer |
| Editing | Joel Rosskopf | First Assistant Editor |
| Sound | Paul Germann | Sound Effects Editor |
| Sound | Matthew Chan | Sound Re-Recording Mixer |
| Production | Brendan Brady | Production Manager |
| Camera | Johann Montreuil | Second Assistant Camera |
| Costume & Make-Up | Jessica Panetta | Hair Designer |
| Production | David Korchok | Location Manager |
| Crew | Jodie Foster | Thanks |
| Crew | Saffron Burrows | Thanks |
| Production | Anthony Grosse | Production Accountant |
| Crew | Jeremy Podeswa | Thanks |
| Sound | Eric Lork | Boom Operator |
| Sound | Amy Fritz | Music Supervisor |
| Production | Drew Cohoe | Assistant Production Coordinator |
| Art | Katie Brock | First Assistant Art Direction |
| Camera | Yoann Malnati | Steadicam Operator |
| Sound | Graham Rogers | Sound Re-Recording Mixer |
| Production | Jordon Walsh | Assistant Location Manager |
| Crew | Helen Du Toit | Thanks |
| Art | Lisa Amaral-Wright | Property Master |
| Production | Krista Fraser | Background Casting Director |
| Sound | Michelle Irving | Music Editor |
| Camera | Marianna Margaret | First Assistant Camera |
| Crew | Elliot Page | Thanks |
| Production | Naomi Ward | Production Coordinator |
| Camera | Maya Bankovic | Second Unit Director of Photography |
| Camera | Rafy | Still Photographer |
| Writing | Amy Nostbakken | Theatre Play |
| Directing | Michelle Koerssen | Second Assistant Director |
| Production | Taylor Danton | Assistant Production Coordinator |
| Lighting | Devin Myler | Best Boy Electric |
| Editing | Anna Catley | First Assistant Editor |
| Sound | Jean Bot | First Assistant Sound Editor |
| Production | Brendan Brady | Line Producer |
| Art | Matthew Bianchi | Set Decoration |
| Camera | Yoann Malnati | "B" Camera Operator |
| Crew | Eileen Graham | Post Production Supervisor |
| Costume & Make-Up | Marissa Schwartz | Costume Design |
| Directing | Ryan Hyland | First Assistant Director |
| Art | Victoria Klein | Property Master |
| Camera | Michael Kostuk | Best Boy Grip |
| Sound | Joshua White | Boom Operator |
| Art | Justin Stephenson | Main Title Designer |
| Crew | Robert Arsenault | Transportation Coordinator |
| Crew | Atom Egoyan | Thanks |
