Promise to little Spencer

6 year old Spencer Reid is saved by the BAU from an evil man that hurt him for 3 years. The team brings him into their family and promise to keep him safe. Will they succeed? Will they be able to help little Spencer forget his past and live a good life? (Warning: This fic has fluff but it also has a lot of dark angst, including violence, rape, torture, etc. You have been warned!)