'Exonerated' coming here BY HEDY WEISS
Now it is headed for a three-city tour led by Brian Dennehy, who will be joined by Mia Farrow and Chad Lowe in Washington, D.C. (Jan. 14-19), and by Marlo Thomas in Boston (Jan. 21-Feb. 2) and then at the Shubert Theatre in Chicago (Feb. 4-16). Veteran film, TV and stage actor Bob Balaban will direct.