NEW YORK - Keira Knightley's Broadway debut was interrupted when a member of the audience shouted at the actress and threw a bouquet of flowers at the stage before being escorted from the theater. Knightley, who plays the title character in the play “Therese Raquin” was onstage Friday with Gabriel Ebert when the disturbance took place at the Studio 54 Theatre, the same location where last year actor Shia LaBeouf was handcuffed during a performance of “Cabaret” for yelling obscenities. The incident on Friday occurred during the first preview of “Therese Raquin,” a stage adaptation of the Emile Zola novel in which Knightley plays a beautiful, but doomed, heroine. At one point, a young man in the mezzanine got up, went to the railing and shouted. Knightly did not break character and the man was heard to say: “Five seconds is too long to wait for a response!” An usher came and escorted the man back to his seat. When security arrived, the man tossed the flowers on his way out. - AP