Trailblazing former FBI agent Joanne Pierce Misko, who was among the ... Before her groundbreaking career with the FBI, Misko spent a decade as a nun in the Sisters of Mercy, a Roman Catholic ...
Joanne Pierce Misko — who earned the iconic nickname “Nun with a Gun” — died at a hospital in Wheatfield, New York, from a lung infection, her brother told The Washington Post.