Mary Hayden came to Trixie and Jack's city running from her obsessive stalker, Donald Tell. She came from Albany. Her mother died when she was young and her brother died in the war. Tell had her father disown her when she left him.

She flead first to her aunts then to a friend in Chicago were she worked as a waitress under the name Mary Kelly. Her staker came to the detective agency claiming to be her brother Christopher Hayden. Jack found her working at a dinner, under the name Mary Thomson and learned the real story. They hit it off and there seemed to be a bit of spark between them. At the end of the episode Justice sent her off to a new unknown destination. Voiced by Clarissa Der Nederlanden.

Appeared in Justice and the Deluge.

Community content is available under CC-BY-SA unless otherwise noted.