The Staircase Netflix Cast includes:
Colin Firth as Michael Peterson
Colin Andrew Firth CBE is an English actor.
Toni Collette as Kathleen
Toni Collette Galafassi is an Australian actress, producer, singer, and songwriter.
Michael Stuhlbarg as David Rudolf
Michael Stewart Stuhlbarg is an American actor.
Patrick Schwarzenegger as Todd Peterson
Patrick Arnold Shriver Schwarzenegger is an American actor and model.
Sophie Turner as Margaret Ratliff
Sophie Belinda Jonas is an English actress.
Odessa Young as Martha Ratliff
Odessa Young is an Australian actress.