Ryan Coogler's family history inspired his upcoming vampire horror flick 'Sinners'.The 'Black Panther' director revealed the "seed" of the 1930s Southern US-based film - which follows twin brothers Elijah and Elias (Michael B. Jordan in a dual role) who face evil as they return to their hometown after leaving their "troubled lives behind", and deals with American blues tunes - started with the relationship of his late Uncle James, who "would only talk about Mississippi" when listening to that genre of music.Ryan explained to SFX magazine: "It's very personal."My maternal grandfather is from Mississippi, and my Uncle James, who passed away while I was finishing up 'Creed', is also from Mississippi."It was a place that I had never been. My maternal grandfather passed before I was born."We grew up in a house that he built in Oakland after he had moved to California.