Many years ago, when Violet O'Valle was a drama teacher in Houston public schools, she discovered a collection of scripts by the great Irish playwright Sean O'Casey in a campus basement. O'Valle, a descendant of South Texas Irish immigrants, knew about O'Casey, of course. He's widely considered to be Ireland's greatest playwright, although his works are not often produced there or abroad. Indeed, the book had been cast aside in that basement as if waiting for the trash bin. O'Valle opened to a random page and read a passage that captured her instantly.