Matthew Rocheleau

The BAU team is following a serial killer who has discovered the Internet as a hunting ground for himself and has given the expression 'social networking' a completely new meaning.

Dre tries to do everything right and keep the peace so that he and Rainbow can avoid their usual quarrel on their annual Valentine's Day date. Diane's siblings try to teach her to give compliments rather than being critical.

Leona and Reece look to raise cash in order to salvage ACN and thwart Blair and Randy. Will gets a surprise at the White House Correspondents' Dinner, while Charlie trades visions with ACN suitor Lucas Pruit. Maggie's EPA scoop makes it to "News Night".