Writer-director Imran Perretta, co-writer Enda Walsh and producer Dhiraj Mahey break down the making of their award-winning first feature, rooted in a childhood police stop that changed everything.

Bang!” Inside a dark military lab, a booming voice announces an unseen explosive event, and Millie Bobby Brown falls to the floor, a drop of blood trickling from her nose. Sirens flash above her as ...