Costello worked on the stage, on film and in numerous TV shows from the 1940s through the late 1980s.
He starred in soap operas including SECRET STORM and THE EDGE OF NIGHT.
Costello's feature film appearances included cult sci-fi pic Terror from the Year 5000, The Gallant Hours, and MacArthur.
Born in Boston, he served in the British Royal Air Force and the U.S. Army Air Corps during WWII, where he was awarded five medals.
After his tour of duty, Ward worked as a foreign news editor for CBS, wrote for newspapers and magazines and studied at the Yale School of Drama. He also studied at the Old Vic and U. of Birmingham in England.
He is survived by his wife, Gerarda; three sons; a daughter; two brothers and a sister.
Costello also appeared on GENERAL HOSPITAL.