The events from the films are (mostly) canonical, except that each of them remains a monster alive in the current day. And while in the time of their original 'stories', they were actual monsters, in current-day life with modern resources, they're basically able to get away with living normal lives. Now, the thing is, though...I know almost nothing about them. So it's an ill-thought-out idea.
Yet it's something that if I could do, I would. Read Bram Stroker's Dracula, read the original book about Frankenstein's Monster, read any other relevant books, and then watch every movie relevant to the characters that has helped to establish them as we know them, plus any further films sharing that continuity (even if loosely)...and even some that don't. (For instance, after I did research to see the monster-film about The Mummy, the original one, then that would be the basis of the character...yet the character may gain aspects of The Mummy from the first two movies of the modern trilogy that weren't in the original.)
That'd be a ton of research. If I had to guess, I'd say that'd probably be around 50 or so old films. Plus, references to some modern works featuring the characters. (As an example, the manga Hellsing is something I want to call out by name.) So I'll probably never actually write the book. (There'd be no point in writing the book without the research done, because it'd be easy enough to make some half-baked reference to it; the whole point of this idea is to pay homage to every aspect of the characters, past and present, so if I didn't do my research, not much point.) And I don't really have the writing really solid. All I truly have is Dracula as the main character, explaining his life to a mortal. (For instance, I'm thinking that the whole "Invasion of London" thing was more or less because the British Empire was the largest in the world at the time, and he was utterly bored. But that is a statement I make in ignorance because I'm just guessing, having not been that familiar with the source material.)
But I felt it made a good blog post!