The Hunchback of Notre Dame is, as you might suspect, based on Victor Hugo's classic novel of tragic romance. Tim Conrad is no Victor Hugo but, to be fair, it's impossible to do justice to the story in a fifty page comic book. This abridged version of the novel is nonetheless faithful to the original, retaining the heart of the story while omitting minor characters and losing some of the subtle themes that make Hugo's novel endure. It is no substitute for the original but it clearly isn't intended to be. No reader buying a short graphic novel should expect to own something that reflects the depth and detail of Hugo's original story.
To his credit, Conrad didn't make the mistake of "modernizing" a classic work of literature. He is not so conceited as to think he could do it better than Hugo did, nor so dim as to believe that modern readers are incapable of understanding the context and setting of Hugo's work. Remember that Hugo's novel was published in 1831. Readers who expect nineteenth century characters to reflect twenty-first century sensibilities might be disappointed, but the graphic novel (as it should) presents the characters as Hugo portrayed them. If the writing seems insensitive to certain ethnic groups or to women, blame Victor Hugo or the times in which he lived, not the comic.
Fortunately, some of what is lost in the condensed story is regained in vivid artwork that often has the feel of old woodcuts. The artwork captures some of the story's intense emotion that the prose fails to convey. Any reader unfamiliar with Hugo's novel will at least get the flavor of the original by reading this adaptation, and fans of the original work will probably enjoy the art. Quasimodo in particular looks exactly like I've always pictured him in my imagination
If you want the real thing -- and you should, if you love literature -- read Hugo's novel. After you've done that, enjoy the artwork in this very abbreviated version.