You don't say if you feel your grandson is guilty or innocent, I presume the latter as you want him defended in the best possible way. I also assume from your son's comment that he thinks he IS guilty, as surely otherwise he would feel as you do. If your grandson is guilty, do you still feel he should have the best chance to be found innocent? I'm sorry, if this sounds judgemental, but I can see where your son is coming from if he feels his own son may be guilty. Do correct me if I've misunderstood, and I'm sorry you find yourself in this sad situation anyway