When Beau Randolph, the founder of hit adult video franchise "College Girls Gone Crazy," is murdered, Castle and Beckett are confronted with a lengthy list of husbands, fathers and ex-college girls who all have a motive. So to find the killer, they must delve deep into the victim's life, where they find surprises at every turn. Also in the episode, Alexis starts a video blog, but Castle is not happy that personal and intimate details about her life are being made public.