Burke and Yang disagree on how to treat a young boy who does not seem to want a needed heart-transplant.
A person from Lightman's past pulls him into a dangerous criminal conspiracy; the group investigates when a high-school student makes murderous threats.
Frankie intends to find a suitable friend for Brick; Sue sneaks into an R-rated movie with her friend Carly; Axl and his band covertly shoot footage of their biology teacher (Kristin Cavallari) for their music video.