The former Dawson’s Creek star – who has eight-year-old daughter Suri with ex-husband Tom Cruise – is joining the Showtime drama as ”shrewd and chic” businesswoman Paige, the daughter of billionaire producer Andrew Finney (Ian McShane) who hires fixer Ray (Liev Schreiber).
The 35-year-old beauty has a bust few months ahead as she will reprise her role as Jackie Kennedy in The Kennedys: After Camelot in the spring.
She is also preparing to make her directorial debut in All We Had, in which she will also star, and she will be seen in Woman in Gold opposite Ryan Reynolds and Helen Mirren.
Katie recently admitted she is pleased to be back working after a few years off, and is ”excited” about what other acting roles she might be offered in the future. She added: ”Work ebbs and flows but I have been fortunate recently to have more projects come my way. And because my child is growing up, I have a bit more time to focus on my work – and I’m excited about it.”