Episode 311, "Severed Ties"
SEASON 3, EPISODE 302 - As the team mourns Lou, and we meet Leah Kearns, a dangerous stalker kidnaps a woman, whom he believes to be his own daughter. Nevertheless, he threatens to kill her if she does not go along with his plans. The stalker also kidnaps and injures her fiancÚ. Our team investigates the news station where the young woman works.