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Another compelling subplot is Gollum's encounter with Sauron. In the original texts, Gollum’s backstory features significant events, including the murder of his cousin Deagol, who finds the One Ring. Following this, Gollum becomes isolated, eventually losing the Ring to Bilbo Baggins. Believing that Bilbo could have been a servant of Sauron instead of finding the Ring himself, Gollum ventures to Mordor. Here, he is captured and interrogated by Sauron, revealing key details about the Ring’s whereabouts.

In the books, Sauron’s representation goes beyond the fiery eye; he physically tortures Gollum and is described as having distinct physical features. This interaction forms a crucial part of Gollum's narrative arc and could add layers of tension and drama to the new film.