Why Trollope translates well to tv

Trollope  is as he would put it d------ good at scenes of perfidy and villainy and although he cannot equal his contemporary dickens at establishing a scene or at physical description of a character he uses dialogue as well as or better than any in establishing and defining character. It's obvious why and how his work translates so well to the screen or more specifically to the tv screen as his work is too sprawling in time and confined in space for movies but is perfect for tv series bbc style. In particular I note the terrific scene in dr Thorne in which at last marynthorne tells off the shallow and oblivious Beatrice who has no idea that Mary actually does love frank. Beatrice completed buys the family line that frank must marry money and has no sense of the cruelty this has been to mary. We see here the shallowness of one character and the subtlety of another. For a contrasting scene the dinner at the Gresham house in which sir Louis gets drunk and says the most malicious things mostly about money to everyone this contrasted w the stoic and mature way in which Thorne responds protecting the easily wounded sensibilities of the Greshams even though they have been cruel and hard-hearted to his niece Mary.