Harriet the Spy

House discovers that Thirteen has been in prison for the past six months, and attempts to discover what crime she was guilty of, while also enlisting her help in defeating his spud gun nemesis, Harold Lam. Meanwhile, the team takes the case of a teacher who is coughing up blood. When they search his home, they find it filled with garbage. But even more disturbing is finding his wife living beneath the filth.