Mary & Denise Mary and Denise found friendship among the stacks of the Northeast Regional Library in Philadelphia while working in the library's children's department together. They, along with co-workers and library supporters, will attend the prestigious 75th Anniversary Celebration of the Central Library of the Free Library of Philadelphia. There, they will meet R.L. Stine, the world-famous children's author. Thanks to LeeHee Fai and Signatures Hair of Philadelphia, these lively librarians wow their co-workers with new beautiful images that make everyone whisper.