Op een nacht loopt alles op rolletjes voor Connor, een aardige en bescheiden jongeman, als zijn oude liefde - de vrolijke en brutale Olivia - hen in een triootje verwikkelt met de lieve en verleidelijke vreemdelinge Jenny. Er ontstaat een romantische relatie tussen Connor en Olivia en hun liefde groeit snel, ze maken zelfs plannen voor een leven met z'n twee. Maar hun gelukkige romance wordt al snel de grond ingeboord wanneer Jenny weer in hun leven verschijnt, waardoor ze alle drie terechtkomen in een moeilijke en rommelige reis naar ware verantwoording en volwassenheid.
Nee, helaas is The Threesome nog niet beschikbaar op Netflix in Nederland.
| Directing | Chad Hartigan | Director |
| Production | Zoey Deutch | Executive Producer |
| Production | Chad Hartigan | Executive Producer |
| Production | Richie Hill | Co-Producer |
| Production | Vince Jolivette | Producer |
| Production | Allan Mandelbaum | Executive Producer |
| Production | Angie Sanfilippo | Executive Producer |
| Production | Steve Shapiro | Producer |
| Production | Trevor White | Producer |
| Production | Tim White | Producer |
| Production | Liz Whitney | Executive Producer |
| Production | Ken Whitney | Executive Producer |
| Sound | Keegan DeWitt | Original Music Composer |
| Camera | Sing Howe Yam | Director of Photography |
| Art | Clarisa Garcia-Fresco | Production Design |
| Art | Cloé Skodnek | Art Direction |
| Production | David Garrett | Executive Producer |
| Costume & Make-Up | Vanessa Moates | Makeup Department Head |
| Editing | Autumn Dea | Editor |
| Production | Chelsea Ellis Bloch | Casting |
| Production | Marisol Roncali | Casting |
| Directing | Ian Campbell | First Assistant Director |
| Directing | Hannah Whitney | Second Assistant Director |
| Directing | Neiagha Thomas | Second Second Assistant Director |
| Sound | Michael Amman | Sound Mixer |
| Crew | Frank Blake | Stunt Coordinator |
| Sound | Tom Ryan | Sound Re-Recording Mixer |
| Sound | Tom Ryan | Supervising Sound Editor |
| Sound | Tom Ryan | Sound Designer |
| Art | Helen Reicks | Set Decoration |
| Sound | Alex Loew | Sound Effects Editor |
| Sound | Ruslan Shebystyi | Foley Artist |
| Sound | Andrii Starykovskyi | Foley Mixer |
| Art | Sebastian Pardo | Title Designer |
| Costume & Make-Up | Emily Batson | Costume Design |
| Writing | Ethan Ogilby | Writer |
| Production | Rick Rickertsen | Co-Producer |
| Production | Mary Solomon | Co-Producer |
| Production | Laena Carroll | Co-Producer |
| Sound | Rob Lowry | Music Supervisor |
| Production | Shelley D. Needham | Line Producer |
| Camera | Jun Li | Camera Operator |
| Camera | Jun Li | Second Unit Director of Photography |
| Costume & Make-Up | Dustye Helms | Hair Department Head |
