. "\"Day One\""@en . "Helen Hathaway is a recurring character in ER. She is the mother of starring character Carole Hathaway. She debuts in the series second episode \"Day One.\""@en . "?"@en . "?"@en . . . "\u2014"@en . . "Helen Hathaway is a recurring character in ER. She is the mother of starring character Carole Hathaway. She debuts in the series second episode \"Day One.\""@en . "Helen Hathaway"@en .