In Peter Jackson's The Lord of the Rings: The Return of the King, Shelob is depicted as a mere giant spider serving Sauron. However, in J.R.R. Tolkien's books, she is a far more mysterious and powerful creature with a fascinating backstory.
What the Films Missed in the Adaptation of The Lord of the Rings
Shelob isn’t just a monster — she is the last daughter of Ungoliant, an ancient being from the Void. Over 6,500 years old, she settled in Mordor long before Sauron’s arrival, making the caves of Cirith Ungol her lair. Contrary to the film's portrayal, Shelob never served Sauron. Instead, she tolerated his presence, as he fed her orcs. Their "alliance" was mutually beneficial: the spider guarded the passages, while the Dark Lord disposed of unwanted prisoners.
Shelob’s Intelligence and Magic
Shelob wasn’t driven solely by instincts —she possessed a keen intellect. She made deals, such as with Gollum, and might have even had telepathic abilities or the power to shape-shift. In some adaptations, she was shown in a human form, which, although not canon, is plausible for such an ancient being.

Why Was Shelob Defeated by Sam?
The Elvish blade Sting, gifted to Frodo, was forged in Gondolin, a kingdom near the lands of the spiders. It was specifically created to battle creatures like Shelob. Additionally, the light of Galadriel's phial, sacred to creatures of darkness, was the final blow to her.
What Happened to Shelob Afterwards?
The film leaves her fate unclear, but the books suggest that, wounded, she retreated into the depths of the mountains. Given her resilience, it’s entirely possible that she survived, waiting for the day she might return once more.