EXCLUSIVE: Jamie Foster’s hunt for a killer is headed to the festival circuit. The new horror thriller Marrow, starring Michael Ironside (Scanners, Total Recall) and Danielle Harris (Halloween), will make its world premiere at the 12th Annual Popcorn Frights Film Festival in South Florida this August.

Marrow follows Jamie Foster (Jessica Dawn Willis), a once-famous true-crime podcaster desperate to reclaim her audience. When she invites an anonymous stalker onto her show—suspecting he may be linked to a series of influencer murders—her ratings explode. But as the mystery caller draws...