The Staircase Netflix Cast includes:
Colin Firth as Michael Peterson
Colin Andrew Firth CBE is an English actor.
| Age | 61 years |
| Height | 1.87 m |
Toni Collette as Kathleen
Toni Collette Galafassi is an Australian actress, producer, singer, and songwriter.
| Age | 49 years |
| Height | 1.73 m |
| Spouse | Dave Galafassi |
Michael Stuhlbarg as David Rudolf
Michael Stewart Stuhlbarg is an American actor.
| Age | 53 years |
| Spouse | Mai-Linh Lofgren |
Patrick Schwarzenegger as Todd Peterson
Patrick Arnold Shriver Schwarzenegger is an American actor and model.
| Age | 28 years |
| Height | 1.85 m |
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Sophie Turner as Margaret Ratliff
Sophie Belinda Jonas is an English actress.
| Age | 26 years |
| Height | 1.75 m |
| Spouse | Joe Jonas |
| sophiet |
Odessa Young as Martha Ratliff
Odessa Young is an Australian actress.
| Age | 24 years |