One of the more ambiguous elements of The Lord of the Rings movies was Legolas' murder of Gríma Wormtongue, but Legolas had his reasons. Peter Jackson's Hobbit and Lord of the Rings movies were full of puzzling decisions, but most of them made sense in the long run. Jackson made directorial decisions geared mostly at condensing his source material into three feature-length movies. Adapting The Lord of the Rings, the masterwork of fantasy's greatest writer, was no mean feat. J.R.R. Tolkien's novel was a vast, sprawling epic and Jackson had to change a lot, including Wormtongue's end.

But Wormtongue's death in the trilogy was oft-disputed among fans. In Lord of the Rings: The Return of the King movie, Legolas shot Gríma Wormtongue with an arrow,w and Wormtongue died at the top of Orthanc. This confused many fans as it seemed contrary to Legolas' normal kindness, and the...