u/Gerry1of1

This is what I'm watching tonight.

A Scotland Yard inspector matches wits with a gentleman cat burglar, or cricketer AJ Raffles {David Niven}, who delights in befuddling detectives. Also stars Olivia de Havilland.

Any other fans out there

My theory is Uncle Soloman Sallow has Munchausen by Proxy syndrome and he keeps Anne sick for the attention/sympathy they get.

That's why he's so angry at Sebastian's attempts to find a cure and why he immediately destroys any item that might be able to help.