Who do Miss Pross and Jerry Cruncher run into while shopping?

Miss Pross and Jerry Cruncher continue shopping, unaware that Darnay has been arrested again. They coincidentally enter the Defarges' shop looking to purchase wine. Miss Pross sees a man in the shop and screams, because she recognizes him as her brother, Solomon Pross, who is now an officer of the French Republic. Jerry Cruncher is equally shocked because he recognizes the same man as John Barsad, the English spy.