Brennan and her team match wits with a serial killer to save a girl's life.
Dee receives numerous e-mails on her myspace.com page from a stranger claiming to be her and Dennis' father.
Vance returns to field duty -- with Gibbs as his partner -- when a murder investigation has a connection to a former NCIS agent incarcerated for stealing evidence.
Buffy's mother gets trapped inside Sunnydale High School when a vampire named Spike arrives in town and launches an attack against the Slayer.
After Mac's father is released from prison, Mac and Charlie stage their own deaths to save their lives; Frank, Dee and Dennis find unique ways of dealing with the loss.