Pre-release marketing for Warner Bros. Companionmightve had you certain the entire game was given away. That is and isnt true: yeah, Iris (Sophie Thatcher) learns shes a robot, and you can make an educated guess what happens next. But for writer/director Drew Hancock and its two leads, getting there was a bit of a creative challenge. Shortly after the robot reveal, it turns out Iris is a pawn in a scheme by her boyfriend Josh (Jack Quaid) and his friend Kat (Megan Suri) to kill Kats boyfriend Sergey (Rupert Friend) and steal the cash in his vault. In an interview with Entertainment Weekly, Hancock revealed Iris wouldve originally killed Sergey with an automatic wine cork. A final Iris vs. Josh showdown was always in the cards, but when it came time to kill Josh, he was unable to top a wine cork to the brain, so he swapped things around: now Josh would get the wine cork, and Sergey took a pocket knife to the throat, a weapon Josh placed into Iris things. Switching that was perfect, said Hancock, because then Jack could be complicit in the planting of the knife, so it all worked out. As for Thatcher and Quaid, they both felt a bit nutty shooting Joshs demise, which was done at 5 am. Thatcher admitted to EW shed been pretty fucking exhausted by that point, which added to the madness of it all. I think I had three Celsius cans, and it felt kind of out of body. Quaid echoed that sentiment, and called it one of the most creative ways Ive ever died in something. It was our final scene we shot, and it was so funny to die in that way and then have everybody clap as the movie was over. Companionends with Iris driving off with Sergeys money and now with full self-control thanks to a technician from her creator, Empathix. Hancock told Variety hes got tiny ideas of a followup, but theyre just that: small thoughts about what Iris sees when shes sleep, potentially finding love again, or giving human life a spin. (Owning a farm was one suggestion, or just enjoying the sunset.) Alternatively, theres always the Smile route and focusing on a new protagonistanything is on the table for Hancock, except for creating a Westworld scenario. But such plans will have to wait, as hes now working on a reboot of The Faculty.Let us know what you thought aboutCompanion,and if it should come back for more sci-fi thrills, in the comments below. Want more io9 news? Check out when to expect the latest Marvel, Star Wars, and Star Trek releases, whats next for the DC Universe on film and TV, and everything you need to know about the future of Doctor Who.