"Totally Killer: A Time-Traveling '80s Slasher Flick Worth Watching"

"Totally Killer," a time-travel teen slasher comedy directed by Nahnatchka Khan, fails to deliver on its mash-up concept of combining "Back to the Future" and "Scream." While the premise is fun, the film lacks charisma and falls short in its '80s throwback setting and slasher elements. Kiernan Shipka shines in her role, but overall, the movie feels like it's just going through the motions. Rated R for violence, language, sexual material, and teen substance use.