Amid their interview this morning, four actors—Julie Berghammer, Jacob Carruthers, Moira Moore and Jerry Uppinghouse—played out two short scenes for us under the direction of Troy Heppner, giving us a tantalizing taste of their spooky new show: “Two Witches, No Waiting.” Set in a small Texas town, it spotlights sisters (and supposed witches) Arlene and Elzbeth Marcus and the quirky characters that surround them as they stew in a heady brew of twists and turns, where barn owls spy on people