I am a criminal defense attorney and not only do I agree with this, but am shocked at the previous answers. In order to help my client, I need a complete picture of what happened.
If the client is really, for real, innocent of the crime, I need to know that so I can find evidence which will corroborate his story. If he says that he was at a sports bar when it happened, I need to go to the sports bar and preserve the surveillance video. How do you guys that never ask innocence or guilt handle that? If he is really for real innocent, then there is a hole in the prosecution’s case that the truth can exploit.
Conversely, I can now better focus my efforts. If the guy is guilty, then any further investigation of the facts will only confirm this true fact, and the time and money spent will not be of any help. If anything, I will only find evidence which confirms his guilt.
Now sometimes the client will lie to me and say he is innocent when he is not. I can usually figure out he is lying rather quickly. Better to do it now in my office, or in the conference room of the regional jail, than in the middle of trial when he is being ripped apart on cross examination. A good chance to ball out the client for wasting my resources that could have been directed in other ways that could actually help him.
Even if I know he is guilty, it doesn’t prevent me from attacking the processes of the investigation. “Officer, from the information you have, you can’t exclude Mr. X, Y, or Z from having committed the crime, can you?”
If I have a situation where a defendant is guilty but tells me he wants to lie on the stand, I will follow the ethical rules, but I’ll start by trying to convince the defendant that such a strategy is foolhardy and will lead him to the penitentiary. I’ll tell him how the prosecutor makes a living exposing lies from defendants. Even ones that think they are good liars. I’ll tell them, correctly, that knowing what I know, I could not bullshit the prosecutor on the stand without being twisted into knots.
I’ll give my clients a lot of leeway and listen to their concerns, but if they continue to insist on a poor course of action, I will have the “come to Jesus” talk with them. I tell them that they are screwing up terribly, and if they don’t trust my advice, then I will resign. I’ll tell them I can’t help them if I am fighting the state and fighting them at the same time. I give them the speech how we can go fight “the good fight” but we will lose and I don’t mind doing that, but when you get taken away to start your 15 to life sentence, I go home to my family. I tell them that when I do that, I will have one beer for them and then I go on with my life. Then I tell them to think hard about it now so they aren’t thinking about it every day for the next 15 years.
It’s worked so far, and I have had to resign a couple of times. I read in the paper how their next attorney took it to trial and the guy got convicted.
TLDR version: I very much need to know my client’s story. He is a crucial witness that has relevant facts.