I don't do criminal law, so no. I don't work on a contingent fee basis, so no. And, since my clients typically aren't the ones to have done whatever supposedly was done, they just insure them, then they are never "guilty" in any sense and they would fire me if I advised them to litigate when liability was fairly certain. So no. And if someone came to me for representation and I learned they had lied professionally and personally over, and over, and over, and over, and over, and over, and over . . . No. Life's too short.