A chilling revelation changes everything, while SIREN itself is called into question.

Cast: Natalia Tena, Tom Felton, Sen Mitsuji, Nora Arnezeder, Fraser James, Philipp Christopher, Madalyn Horcher, Siobhán Cullen, Angela Beccaro, Bronwyn Carrie-Wilson, Wil Coban, Jóhannes Haukur Jóhannesson, Nina Wadia, Aidan Whytock, Millie Davis