Having left Riverdale two years ago to follow her dreams, Mary returns to town in her family's hour of need. She not only reconnects with Archie and her husband, Fred, but also her former high school gal-pals Hermione and Alice, just in time for a homecoming dance. 
Mary was raised in Riverdale and attended the local high school where she was friends with Hermione Lodge and Alice Cooper. She later went on to marry Fred Andrews and they welcomed their first and only child, Archie Andrews. Two years prior to the start of the series, she and Fred separated and began divorce proceedings. Mary moved to Chicago in that time, and while she wanted her son to go with her, he chose to stay in Riverdale with his father.
After two years of separation, Fred thought it best to finalise their divorce, which required him to drive out to Chicago, where the two of them originally planned to have diner together. However, they decided to wait until the following morning, when the lawyers would be present as, apparently, the relationship between Mary and Fred had gotten to the point of needing a mediator when in each other's company. The next morning, she and Fred returned to Riverdale, much to the surprise of Archie. 
- See also: Category:Images of Mary Andrews