Mary Shannon is a U.S. Marshal in the witness protection program who spends her time relocating federal witnesses.. Based in Albuquerque, New Mexico, Mary works with her partner, Marshall Mann, to place criminals and innocent witnesses into new lives. When not putting her life on the line to protect federal witnesses, Mary attempts to manage her dysfunctional family, including overly dependent mother, Jinx, and younger sister, Brandi, both of whom live with her. Between work and family, Mary has little time for boyfriend Raphael Ramirez who plays minor league baseball.
Exit your old life. Enter Witness Protection.
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Did You Know?
The SE logo on Mary's Ford Probe disappears from time to time off the doors. See more
Mary Shannon wears high heels on duty.
Given that she has to run and walk long distance, it makes no sense for her to wear heels. See more
Since 1970, the Federal Witness Protection Program has relocated thousands of witnesses, some criminal, some not, to neighborhoods all across the country. Every one of those individuals shares a unique attribute, distinguishing them from the rest of the general population. And that is, somebody wants them dead.
Referenced in Supergirl: In Plain Sight