CBS and ABC once again shared Friday leadership — CBS with total viewers (8.63 million), ABC with all key demos. ABC was bolstered by “Shark Tank” and “20/20” — each series tying their respective season-highs among adults 18-49. “20/20,” which featured Silence Broken: A Mother’s Reckoning, a Diane Sawyer special, with Sue Klebold the mother of […]