"Totally Killer" is a horror-comedy movie released in 2023, directed by Nahnatchka Khan and starring Kiernan Shipka and Olivia Holt. The movie is rated R for bloody violence, language, sexual material, and teen drug/alcohol use. The story follows a teen girl who time-travels back to 1987 to stop a serial killer known as "The Sweet 16 Killer". The movie has received mixed reviews, with some critics praising the characters and the comedy, while others found the horror elements underwhelming. Parents should be aware that the movie contains graphic violence, strong language, and sexual content, and is not suitable for children.