1899 Paris is roiling over the infamous "Dreyfus Affaire." From the Chamber of Deputies to the popular press to cafe society, the rumor is that Captain Dreyfus, convicted of treason in 1894 and sentenced to banishment from France for life, is to be given a new trial. However, amidst the growing clamor on both sides, there are those who will stick at nothing to prevent the truth from coming out. Meanwhile, following the Milverton case ("The worst man in London"), Holmes and Watson are keeping a low profile. Upon returning from a rare evening out they are accosted by a young army officer...