Sam Waterston is joining "Grace and Frankie," the Netflix comedy starring Jane Fonda and Lily Tomlin as nemeses whose husbands, in turns out, are in love with each other.
Waterson will play Sol, the husband of Tomlin's Frankie, who has been secretly having a decades-long affair with his law partner, Grace's husband, Robert (Martin Sheen). The two men tell their wives that they want to get married, and the titular women discover that despite their wishes, their lives are inextricably bound together.
"Grace and Frankie," which was created by "Friends" co-creator Marta Kauffman and Howard J. Morris ("Home Improvement"), is set for a 2015 debut on Netflix of 13 episodes. Paula Weinstein, David Ellison, Dana Goldberg and Marcy Ross are also attached as executive producers, and Tate Taylor (director of "The Help") is set to helm the first episode.
Waterston is currently starring as network executive Charlie Skinner in HBO's "The Newsroom"--in which, incidentally, Fonda has had a recurring role. The final season of the cable series will be aired this fall.