Warning: This episode contains spoilers for Episode Six of the Third Season of Miss Scarlet and The Duke. As a title character in Miss Scarlet and The Duke, William ‘Duke’ Wellington has a remarkably poor crime solving rate when compared to his amateur friend and colleague, Eliza Scarlet. But Stuart Martin assures viewers that the Duke is solving 100% of the crimes you don’t see him investigate, just off screen — not including the mystery of his love life, that is.