Though it's unclear how conscience J.K. Rowling was of her Tolkien overlaps when writing Harry Potter, there are clearly many comparisons that can be made.
One of the most memorable images from the Harry Potter series is the iconic Dark Mark of Voldemort. What if this symbol was hinted at, earlier in the series?
Harry Potter fans have seven books and eight films to devour at their leisure, but many feel as though the films didn't do justice to the source material.
According to a Harry Potter costume designer, Dumbledore's soft, comfortable outfits say a lot about him as a person — and his memories of Grindelwald.
If this fan theory is to be believed, Harry once took advantage of a teacher in the same unethical way that Tom Riddle did during his time at Hogwarts.