In March 1945, O'Neal was working with Jones in a dig in a mound near New Grange in Ireland. One afternoon, they discovered some six-thousand year old spiral carvings on stone, one of which O'Neal pocketed. As O'Neal was leaving the underground barrow site in the evening (slightly superstitious of the fairy folk), he met a mysterious blond woman, who sought to give a letter to Dr. Jones from his father. Later that night, O'Neal learned of a plot to kill Jones, and snuck into Jones' room at the inn to warn him. Jones, already alert to the Nazi assassination plot, ambushed O'Neal before realizing it was his friend.