With Ethan Hawke, Lena Headey, Max Burkholder, Adelaide Kane. A wealthy family are held hostage for harboring the target of a murderous syndicate during the Purge, a period in which any and all crime is legal.
Child Eater - YouTube (thumbnail doesn't match film)
Who are the Cenobites? The movies fail to go into much detail about these beings. The graphic novels introduce several more and give some information about their Earthly lives prior to being transformed.