"when Stoker's widow sued over "Nosferatu", there were also surviving prints"
One of the most insane things I've ever heard concerning movies was that somehow, the judge in that case orders ALL PRINTS of NOSFERATU destroyed. I mean... WTF!!!!! You sue for money, not to destroy artwork.
That's another one I managed to see on TCM, once... a bit frustrated I didn't tape it that night. I have seen the 1979 remake several times, though. It follows the story very closely, except it uses more imaginative camera angles & camera-work. I think they may have changed a few of the details, but I'm not sure. It did seem to me that Jonathan's employer, Mr. Hawkins (a kindly man who dies halfway thru the novel-- under circumstances NEVER explained-- and leaves everything to Jonathan & Mina) in the silent film apparently KNEW what he was sending Jonathan into.
In the 1970 Jess Franco version, Van Helsing (who actually runs the asylum himself in that one), describes how Renfield was a businessman travelling in Transylvania with his daughter. His daughter died under mysterious circumstances, and he was found, his mind unhinged... somewhere not far from Castle Dracula. This was that film's "explanation" for Renfield (there NEVER was one in the book!).
But in the silent version, it seems Mr. Hawkins may have actually MET Dracula, and sent Jonathan in his place on a 2nd trip, to seal the deal. I'm trying to remember if Jonathan dies in that version. I know in one of them, he becomes a vampire at the end of the story...
It continues to amaze me how different each adaptation of DRACULA has been over the years, and, good or bad, each one at least has been fascinating in its own right.
This even goes to some of the comics adaptations. For example, the Fernando Fernandez version (a fully-painted graphic novel), Dracula actually falls in love with Lucy. So when she's killed, he goes after Mina, purely in revenge for having lost the woman he cared for. Definiately not the way it was in the book. There, Lucy was handy, and he went after Mina as a way of giving it back to the vampire hunters who were out to destroy him. No romantic ideas involved at all. (Dracula was a TOTAL bastard in the book... just like Christopher Lee's version!)