Score a huge one for Todd Haimes, longtime artistic director of the nonprofit Roundabout empire. The company, which operates three Broadway venues, will launch its 50th anniversary season next October with Keira Knightley as Emile Zola’s adulterous heroine, in Thérèse Raquin, perennial catnip for playwrights and screenwriters. Haimes commissioned the latest adaptation, by Helen Edmundson. It was first presented in summer 2014 at the UK’s Bath Theatre Royal (Knightley was not involved). Evan Cabnet (Poor Behavior, The Model Apartment) will direct.

Story revolves around the title character, whose passionless marriage to Camille, an epicene simp, is blown up with the arrival of hot’n’handsome Laurent, resulting in sexy dark business later recycled in any number of films noirs, plays, TV miniseries, an opera and even a Broadway musical by Harry Connick Jr. (Thou Shalt Not, which didn’t).

74795256Knightley (Pirates Of The Caribbean, Begin Again, etc.) stars in the upcoming Laggies and The Imitation Game. She was Olivier Award-nominated for The Misanthrope in London, where she also toplined Ian Rickson’s revival of Lillian Hellman’s The Children’s Hour.

No other casting has been set, nor has a theater. Roundabout has the American Airlines, on West 42nd Street, Studio 54, where Alan Cumming and, shortly, Emma Stone, star in the revived revival of Cabaret, and the Stephen Sondheim, currently and for the foreseeable future locked up with the non-Roundabout hit, Beautiful.

What is set is that the show will begin previews October 1, 2015 and open Ocotber 29, in some space eligible for Tony Awards consideration.