Dear PurplePosey:
Without knowing any details, I would say, do everything you can to get him effective legal counsel and help, the best attorney possible. Calm down best you can and pursue legal help wisely.
If you would like to share any details, like what could the worst consequences be, for your son (jail/ prison?), and/ or share anything at all that you would like to share, please do, and I will reply further.
anita