The Domino Lady is a masked crimefighting heroine. Her real identity is Ellen Patrick, a University of California, Berkeley-educated socialite. When her father, District Attorney Owen Patrick, is murdered, she puts on a black domino mask, backless white dress with a slit & black cape to avenge him.

She would arm herself with a .45 pistol & a syringe full of knockout serum, but often her best weapon was her beauty, which often distracted & entranced opponents, or at the very least led them to underestimate her, allowing her to outwit them. Such wiles rarely worked upon her female adversaries, however.

She steals from her targets, donating most of the profits to charity after deducting her cut, & leaves a calling card with the words "Compliments of the Domino Lady".

Ellen's hand-to-hand combat style primarily involves high kicks; which show off her legs through her slit-to-the-hip gown.

Ellen is just as likely to use her feminine allure, knockout figure, quick wit & her talents in the bedroom to uncover information & distract bad guys as she is to her pistol & knockout serum. While she is quite unapologetic about her many liaisons, she draws the line at sleeping with men who are involved with someone else.

She has a insider in the police force, det. "Mad Dog" Morgan Verani who provides her with details of cases he thinks she would be interested in.

Ellen is very fond of her collection of high-heel shoes.