Martha accepts to defend British Army Captain Ed Ryan in a military court against a charge that he disobeyed a direct order. While on duty in Afghanistan he was ordered not to go out on patrol but, for reasons unknown, - and which Ryan has thus far refused to explain - he led his squad on patrol leading to the death of one of his men, Private Rivers. The truth, when it all finally comes out, proves that guilt and innocence in this case is far more complex that anyone could have imagined. Meanwhile, in chambers, Billy is still accepting briefs from solicitor Micky Joy, though Martha has made it very clear that she, for one, wants nothing to do with him or his cases. Joy doesn't give up very easily however. The Head of Chambers, Alan Cowdrey, decides they should also be prosecuting cases as well as defending.
—garykmcd