The ISIS Prisons Museum was established in 2017 when a group of journalists, filmmakers and activists entered deserted Islamic State prisons to collect evidence. We talk to two journalists behind the project as their archive launches to the public. Amer Matar is Director of the ISIS Prisons Museum, Robin Yassin-Kassab is its Chief English Editor, and Yvonne McDermott Rees is Professor of Law at Swansea University.