Crystal Lake, the 2026 Peacock/A24 prequel series, offers a new explanation for the date in the franchise’s name.
The real reason the franchise is named Friday the 13th traces back to 1979. Before the screenplay was finished, director Sean S. Cunningham advertised Friday the 13th in Variety to claim the title and check whether anyone else owned the rights. He chose the ominous calendar date as a marketing hook, hoping to repeat the box-office success of John Carpenter’s Halloween (1978).
In the universe of the movies, the first film is set on Friday the 13th in June of that year. Mrs. Voorhees says “today is his birthday,” referring to Jason. So, Jason’s birthday is on June 13. But he wasn’t necessarily born on a Friday (despite widespread assumption that this is the case).
In Friday the 13th: The Final Chapter, we see Pamela Voorhees’ gravestone. It lists her death as 1979, which is the year many people associate with the setting of the first film. But there’s no Friday the 13th in June in 1979. At least, not in the real world. There is a Friday the 13th in June in 1980, however, and that’s when the first movie was released.
Regardless, for Jason’s birthday to have been on a Friday the 13th, and for that to line up with his drowning in 1957 (which is stated in the first movie), he would have had to have been born in 1947 which has a Friday the 13th in June. But that’s never stated anywhere in the films. Most people associate his birth with 1946, which does not have a Friday the 13th in June. So, like the waters of Crystal Lake, it all gets very murky.
The Crystal Lake series give a much cleaner reason for the ominous date being associated with Pamela and Jason. In the Peacock series, Jason is born on Friday, May 13, 1960. There is a Friday in May of 1960 in the real world, so everything falls into place.
As for the series itself, Jason Voorhees’ ability to survive starts with a secret experiment in Crystal Lake. A Cold War program called Project Argonaut subjected him to treatments intended to help humans withstand nuclear threats. The company behind it had ties to his father.
The treatments left Jason deformed and gave him extraordinary powers of recovery: suffering trauma makes him stronger. That provides an explanation for how he survives his apparent drowning at camp and the violence that follows across the Friday the 13th movies.
Set years before the original 1980 film, the series follows Pamela Voorhees, played by Linda Cardellini, after her son’s apparent death. Flashbacks explore Jason’s origins, while Pamela’s grief and relationship with him help trace her path toward becoming the original film’s killer. References to earlier movies and recreated moments connect the prequel to the story that follows.
