A Spoiler Ruins My Reading!

I'm reading Dostoyevsky's The Idiot. Quite enjoy it by far. Being a little confused about characters so I searched online and found a characters list for this book. But this list not only tells your who is who, also briefs what happen to them later in the book! Now I know what happens to the main characters (by just one sentence, caught me off guard!) and probably it is the most important story plot of this book. Terrible! But I will go ahead finish reading nonetheless.