Theo's origins story is a mess. It's totally unconvincing as the actual early life of Cruella, but more importantly it's no fun at all. It misses all the pay-off for every gag. It has the most ridiculous voiceover filling in all the plot holes and attempting to amplify the acting. And Emma Thompson is terrible in it. Every scene she's in dulls to a standstill. A real missed opportunity.
Review of Cruella
