An investigation leads Brennan back to her old high school, where a classmate of Brennan's is found murdered, similar to another girl in her class 15 years prior. Booth and Brennan go undercover as a married couple during the high school reunion to try to discover the killer, which includes several of her previous classmates. Brennan is helped by her only friend from high school, the janitor, Ray Buxley (Robert Englund), to help find the killer. Back at the lab, Wendell accidentally finds out from Hodgins that Angela believed she was pregnant and did not tell him. Wendell then tells her would have taken his share of the responsibility and consequences. Later, Angela ends their relationship as she felt his answer to the pregnancy was that it was his obligation. After the case, the team get together at the bar sharing their high school experience. Brennan expresses she was glad she attended the reunion and that she realizes how lucky she is to have the friendship she has today.