I caught half an episode the other day, but I know it well - both book (Anthony Trollope) and DVD. A panorama of Victorian society and an apparently very rich entrepreneur who soon has society in his pocket.
The BeeB did it some years ago - being a fan of the book I was a bit wary but IMO they did it extremely well. David Suchet is absolutely superb as the foreign born entrepreneur - anything less like Poirot is hard to imagine!
If it’s available on BBC iPlayer or anywhere else, very well worth a watch, IMO - IIRC there are at least 6 episodes.
When does your computer become obsolete?