Warner Bros.

Before James Wan returns to sea for "Aquaman 2," he's returning to his indie horror roots.

Wan has set his next directorial film project, an untitled original thriller for New Line Cinema that will begin production this fall. Plot details have not been revealed.

After that, he is producing and likely directing the sequel to his blockbuster movie "Aquaman." He's also busy overseeing the "Conjuring" franchise and recently signed up to direct Amazon's "I Know What You Did Last Summer" series. 

Wan broke out in the horror genre with 2004's "Saw." Since then, he has remained a producer in that franchise, helped create the "Insidious"/"Conjuring" universe, and helmed "Furious 7."