“Trial By Fire” (*** out of four) was an absorbing biographical drama of the controversial true story of Cameron Todd Willingham (Jack O’Connell) who proclaims his innocence while being convicted of killing his three children by setting them on fire. Years later- a sympathetic attorney (Laura Dern) takes up his case and tries to save him from the death penalty but finds no one listening even as she finds crucial evidence that supports his innocence. Two terrific performances from O’Connell and Dern help overlook some story flaws. Yet another powerful and thought-provoking story from director Edward Zwick.