Heather Mason and her father have been on the run, always one step ahead of dangerous forces that she doesn't fully understand. Now on the eve of her 18th birthday, plagued by horrific nightmares and the disappearance of her father, Heather discovers she's not who she thinks she is. The revelation leads her deeper into a demonic world that threatens to trap her forever.
Adelaide Clemens
as Heather Mason / Sharon Da Silva / Alessa
Sean Bean
as Harry Mason / Christopher Da Silva
Radha Mitchell
as Rose Da Silva
Carrie-Anne Moss
as Claudia Wolf
Malcolm McDowell
as Leonard Wolf
Kit Harington
as Vincent Carter
Deborah Kara Unger
as Dahlia Gillespie
Martin Donovan
as Douglas Cartland
Erin Pitt
as Young Alessa Gillespie
Peter Outerbridge
as Travis Grady
Jefferson Brown
as Detective Santini
Milton Barnes
as Detective Cable
