When the secret other half to Dr Spencer Reid's magnificent brain is introduced to the BAU all hell breaks loose. Her large family brings their fair share of problems but Elizabeth Baker is always the one to sort it as the eldest sibling. With family problems being a common theme, Spencer's best friend quickly befriends Unit Chief to the BAU SSA Aaron Hotchner, but is there more than friendship between them? Will Eliza's family problems and past come to haunt the BAU and Red Cell teams? Will Elizabeth finally get her dream job?