Sam Waterston joins cast of 'Grace and Frankie'

Sam Waterson will star in Netflix's 13-episode comedy Grace and Frankie alongside Jane Fonda and Lily Tomlin, it has been revealed.

According to Hollywood Reporter, Netflix's original content vp, Cindy Holland confirmed in an interview that the 73-year-old actor will be playing the part of Frankie's husband, who is secretly in love with his law partner for the past 20 years and now they want to get married.

The show is written and created by Friends co-creator Marta Kauffman and Howard J. Morris and will make an early debut in 2015.