Synopsis
Other Halves opens with Devon pitching the eponymous dating app. It pairs users based on their Internet usage.
Cut to Jasmine, lying naked on the floor, covered in blood, next to a dead body. She calmly cleans up the scene.
Devon returns to the office, and we meet the rest of the team: Shawn, Beth, and Jana. Jasmine returns, too, giving no indication she just murdered someone. Shawn shows them a new feature of the app, which rapidly plays the user's entire history.
Jasmine objects to feature creep; Devon takes Shawn's side. As they argue in the ladies' room, they realize someone is spying on them...
Beth's boyfriend Mike arrives, to Shawn's chagrin. Mike endears himself to the rest of the team, especially when he spills coffee on his shirt and strips to the waist. He goes off to clean up, and is promptly murdered by an unseen assailant.
Elle, a former partner, arrives and claims credit for the app, angering Jana. After they kick her out, Shawn & Beth go searching for Mike.
The power mysteriously goes out. Devon leaves to investigate, and Elle strangles Jana. Jasmine tells her that she was under the influence of the app.
Shawn & Beth sleep together, also due to the app.
Devon returns to an empty office. Testing the app again, she blacks out, wakes up naked on a fire escape.
Devon, Shawn and Beth piece together that something is wrong with the app. Jasmine, secretly working with Elle, encourages them to keep working.
Elle catches Shawn alone, shows him video of what he's done: spy on the girls, kill Mike, sleep with Beth. Shawn, guilty, wants to shut the app down, so Elle kills him.
Jas forces Dev to use the app again. She accidentally kills Beth, so she goes to shut the servers down. Elle tries to stop her, and after a scuffle, Devon kills her.
Devon tries to talk sense into Jasmine one last time, then resigns herself to using the app, so she can bring herself to kill her best friend and end this once and for all.