Three months after Darcy Cahill was promoted to head the Randallstown branch of the Baltimore County Public Library (BCPL), at 6 a.m. on a Saturday morning, the branch suffered a devastating fire. When firefighters finally contained the blaze, she was shocked to see the building drenched and in disarray. This article gives a detailed description of the many ways Darcy Cahill has made a difference at the Baltimore County Public Library in Maryland.