Dancing the Death Drill

Through Jerry's testimony the reader discovers that the waiter is actually Pitso Motaung, a mixed race South African drafted to fight in the First World War. He is also one of the few remaining survivors of the SS Mendi tragedy, which saw the formidable warship sink off the coast of the Isle of Wight, killing 646 people, including many black South African soldiers. So how did a brave soldier become a criminal and will Pitso's name be cleared before it is too late?