Nowhere in law do ethical considerations play a greater part or come into greater conflict than in the defense of those accused of crime. The lawyer defending an accused owes a duty to his client, a duty to society, and a duty to the court. The duties to each are not completely clear and when the various loyalties conflict, fair, safe, and moral resolutions are most difficult.
Gerald S. Gold, Split Loyalty: An Ethical Problem for the Criminal Defense Lawyer, 14 Clev.-Marshall L. Rev. 65 (1965)