Missouri executes Marcellus Williams despite questions over evidence, after Supreme Court denies final bid for delay  CBS NewsMarcellus Williams Executed After U.S. Supreme Court Declines to Intervene  PEOPLEWas an innocent man just executed in Missouri?  The HillMissouri executes a man for the 1998 killing of a woman despite her family’s calls to spare his life  The Associated PressMissouri, Texas execute 2 inmates over killings of woman, infant as more expected in other states  Fox News