Ashley Hotchner is Aaron Hotchner's niece, and she is going to the local college by her uncle's house. Aaron thought it would be cheaper to pay if she just lived with him, and she gladly accepted.
When an unsub targets the two of them, Aaron seeks help and hiding in the BAU for Ashley, more concerned for her safety than his. She meets the team and during several stressful hours, someone from the BAU team is catching her eye.
Boy-Wonder: Doctor Spencer Reid