Plot twist: "The Purge" plans to kill itself in the final purge.

James DeMonaco wrote the scripts for all four "Purge" movies to date, and directed the first three films. There's also now a TV series on "The Purge."

DeMonaco told Entertainment Weekly he does see an end in sight for the film franchise with the next fifth movie:

“I have it in my head. I think I’m going to write it. I think it’s a great way to end it all. We want to end it all, I think, in this one, and I’m very excited. When I came up with the idea and pitched it to everybody, they seemed psyched, and I think it will be a really cool ending, how we take this one home."

This all started with "The Purge" in 2013. Worldwide, it made $89.3 million off an estimated $3 million budget. Studios looooove that kind of profit margin, so of course they made more movies. And they kept making money.

The second film, "The Purge: Anarchy," was released in 2014 and made $111.9 million worldwide. The third movie, "The Purge: Election Year" made $118.6 million in 2016. And "The First Purge" -- which just came out this past summer, directed by Gerard McMurray -- made $136.2 million worldwide. That film made almost an equal amount at the domestic and foreign box offices, whereas the other films tended to make a bit more at the domestic box office.

Most of today's money is made in the international markets, and there's clearly still an interest in this franchise. Sure, the reviews have been terrible, but they have been terrible for all four films -- including low audience reaction scores -- and people just kept showing up.

Will you show up for the final purge, whenever it begins?

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