Totally Killer is a 2023 American black comedy slasher film directed by Nahnatchka Khan from a screenplay by David Matalon, Sasha Perl-Raver, and Jen D'Angelo, and a screen story by Matalon and Perl-Raver. Produced by Jason Blum, under his Blumhouse Television banner, and Adam Hendricks and Greg Gilreath under their Divide/Conquer banner, it stars Kiernan Shipka, Olivia Holt, Julie Bowen, and Randall Park, and follows Jamie (Shipka) who, after her mother’s friends are murdered by the Sweet Sixteen Killer on Halloween, travels back in time to 1987 where she pairs up with her mom to stop the young would-be-killer and get back to her timeline before she's trapped in the past forever.

Totally Killer premiered at Fantastic Fest on September 28, 2023, and released on Amazon Prime Video on October 6, 2023.