As with the idea propagated by the film that a bunch of taliban-like Christians looted and set fire to the Great Library, the idea that they 'flayed' the librarian too, is one of those myths picked up by Edward Gibbon and quoted ever since by people who think him a reliable source; he isn't.
The Library was burned down, by accident. Hypatia was certainly killed by zealots who may well have called themselves Christians, but the idea that St. Cyril was involved is not supported by recent scholars such as McGuckin.
The film is an interesting variation on how many ways can the media attack Christianity, and if I have saved you a few pounds, I'm glad, it makes up for the ones I spent on it
In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation for our sins. (1 John 4:10)