SSA Serenity Pierce has just transferred from the Hostage Negotiations Unit in the FBI to the BAU after a recent brush with death. Many believe that she isn't ready to come back to the bureau, yet, Serenity vows to prove them wrong. With her brilliant mind she begins her time at the BAU and meets Spencer Reid, a very shy yet intelligent agent. As Serenity becomes closer to the team, she also becomes closer to Spencer,yet, will her past and inner struggles come back to haunt her? A Spencer Reid fanfic