Everything you need to understand or teach The Rainmaker by John Grisham.
Rudy's adventures in the legal world of Memphis inevitably bring him to ethical questions. In court during the trial, Rudy is an ethical paragon, but he is less morally secure during the ambulance chasing episodes. In A Time to Kill, Jake Brigance debates what actions he can ethically take to get Carl Lee back as a client, and decides that he has to cross the ethical boundaries.
Grisham bestows similar quandaries on Rudy...