ABC will air a three-hour news special tonight at 8 p.m. ET and 7 p.m. CT, anchored by George Stephanopoulos and featuring World News Tonight‘s David Muir, ABC News Live Prime‘s Linsey Davis and ABC News’ political team. The special report will replace three previously scheduled episodes of Who Wants to Be a Millionaire. (Shark Tank repeats will air from 8 to 11 p.m. in Pacific and Mountain time zones.)