Cargill made the comments to Slash Film for an article celebrating the 10th anniversary of Sinister. And in his own words: “The idea [for ‘Sinister’] grew out of a nightmare that came after I saw ‘The Ring’ in a theater.” Cargill continues, “It was a nightmare that haunted me for so long that I was still hearing the echoes of it about three weeks after I saw it nightmare in my head, realized that if it scared me that much, it would probably scare other people.”
According to the author, he spent the next few years refining the concept, occasionally introducing it to friends to see how they would react. “Finally, like 2007, 2008, it was a solid pitch,” Cargill noted, adding, “People got goosebumps or were really excited.” Apparently his filmmaker friend Scott Derrickson was one of those people. And as Derrickson himself told Slash Film after hearing Cargill’s “Sinister” pitch, he said to his pal in no uncertain terms, “This is the best idea for a horror movie I’ve ever heard.” Genre super producer Jason Blum agreed and accelerated production of “Sinister” through Blumhouse Productions.
Less than a year later, Cargill and Derrickson had turned a The Ring-inspired nightmare into a real cinematic nightmare. A decade later, viewers are still talking about Sinister, which (for the record) would make a nerve-wracking double feature with The Ring – and are sublimely freaked out by it.