Book IV of The Lord of the Rings follows Frodo and Sam as they slowly journey towards the Land of Mordor. After leaving the Fellowship behind, they become lost as they wander through the wilderness. Gollum has been pursuing them at length, and finally comes to them as they wander. Rather than hiding or attacking, they take him in as their guide. Gollum guides them eagerly through the Dead Marshes and to the Black Gate, however they soon realize they will need to enter Mordor through a different path. Gollum tells them of a different, secret path which will lead them through a tunnel…