Marion Cotillard played a singer.
Mary Evelyn `` Billie '' Frechette ( September 15 , 1907 -- January 13 , 1969 ) was an American Menominee singer , waitress , convict , and lecturer known for her personal relationship with the bank robber John Dillinger in the early 1930s . Marion Cotillard . She next starred in Michael Mann 's Public Enemies ( 2009 ) as Billie Frechette , and played Mal in Christopher Nolan 's Inception ( 2010 ) .