"It's taking a thing you think you know everything about and making you realize you know nothing," said "Parkland" director Peter Landesman.
The movie is named after the hospital where President Kennedy was taken after being shot by Lee Harvey Oswald.
"I always knew it was going to be a 90-minute movie from the moment I wrote it. I feel like human beings have a threshold for taking in intense stories and it's about 90 minutes," Landesman said.
The film tells various stories of people connected to the assassination from the man who shot the famous film that captured it to the family of the killer.
"It was a passionate weekend. It was a terrifying weekend and I wanted the movie to capture that emotion," said Landesman. "It's PG-13 for a reason. We designed it so that it could be watched by young people without their parents feeling like they were being exploited."
"Parkland" is in theaters now. The new film was opened in limited release on Friday as the 50th anniversary of the assassination approaches.