Masterpiece Mystery!: Miss Scarlet and the Duke Season 3 DVD PLEASE ADD THIS PRODUCT DESCRIPTION: Eliza Scarlet (Kate Phillips, Peaky Blinders) finds herself immersed in fresh and surprising mysteries, from a disappearing magician to police corruption, as she struggles to build her detective agency. Growing competition from a rival agency creates new problems, and all the while she is still juggling her relationship with Inspector William Wellington, the Duke (Stuart Martin, Jamestown). Producer: Erin Delaney, Jim Duggan. Author: Rachel New, Ben Edwards, Sarah-Louise Hawkings, Dan Muirden.