Duchess starts off well. The titular heroine, Charlotte Monaghan, falls for a charming, dynamic man who pulls her into his high-flying drug-funded lifestyle. The twist is that she's more than tough enough to make a go of it. Their relationship seems perfect.
From the outset, Marshall uses a variety of visual touches reminiscent of Guy Ritchie movies - freeze-frames, bold text captions, colorful narration in the heroine's distinctive voice (the most shameless over-the-top cockney accent since Dick van Dyke in Mary Poppins).
The performances make it work. Charlotte Kirk is not entirely convincing in the lead role, but she's very likable in a deliberately cartoony way. Philip Winchester is effortlessly charming as her crime-boss beau - I'd like to see much more of him in other roles. Sean Pertwee, a Neil Marshall regular, is welcome as always, doing his crusty supporting part. And Colm Meaney is meaner than we've ever seen him, in a single scene as the heroine's low-life father.
So far, so good. But about midway through, Duchess takes a turn for the more conventional and somewhat less enjoyable. What started as a quirky underworld romance morphs into a fairly straightforward revenge yarn. The flavorful characterizations of the first half are de-emphasized, in favor of over violently over-the-top action.
I'm okay with the violence, and with the revenge theme - but not so pleased about the predictability and occasional loose logic. It's still entertaining, with some nice set-piece moments - but not as fresh and original as the romance of the first half, nor as clever as we might expect from a director of Neil Marshall's accomplishments.
Nonetheless, I would definitely recommend Duchess to anyone who enjoys a wacky, ultra-violent crime send-up. It's an entertaining film, worth seeing if only for the off-beat performances.