Elisabeth Moss as Cecilia Kass

Aldis Hodge as James Lanier

Storm Reid as Sydney Lanier

Michael Dorman as Tom Griffin

Harriet Dyer as Emily Kass

Oliver Jackson-Cohen as Adrian Griffin

Benedict Hardie as Marc

Zara Michales as Nurse

Renee Lim as Doctor Lee

Sam Smith as Detective Reckley

Nick Kici as Taylor

Vivienne Greer as Screaming Woman

Anthony Brandon Wong as Accident Victim

Serag Mohammed as Strike-Stun Guard

Nash Edgerton as Security Guard

Nicholas Hope as Head Doctor

Cardwell Lynch as Police Officer

Xavier Fernández as Detective

Cleave Williams as Orderly

Brian Meegan as Lyft Driver

Amali Golden as Annie (uncredited)

Dennis Kreusler as Car Park Guard (uncredited)

Michael Knott as Bandaged Hospital Patient (uncredited)

Randolph Fields as Pedestrian (uncredited)