Brisingr

     Brisingr is the third installment of the Inheritance Cycle. It continues three days after the ending events in the second book, Eldest. Eragon and Saphira, along with Roran, are travelling to Helgrind to, hopefully, rescue Katrina. Eragon manages to find and kill one of the Ra'zaac, leaving only one alive. They rescue Katrina, but Eragon also finds Sloan with both of his eyes missing. Eragon sends Roran, Katrina, and Saphira back to the Varden so he could deal with the last Ra'zaac and Sloan.
     When he finds the last Ra'zaac, it gives Eragon hints about Galbatorix. It asks Eragon to pass on the tale of the Ra'zaac, the Bringers of Fear. Refusing this offer, the two quickly battle, and Eragon comes out victorious. Eragon rescues Sloan and uses his true name to prevent Sloan from ever going near Katrina or Roran again. When Eragon makes it back to the Varden, it is discovered that Katrina is pregnant with Roran's baby. They plan to get married, with Eragon serving as preacher. Just before the wedding, Thorn and Murtagh attack. With the elves' help, Eragon manages to fend them off. He then marries Roran and Katrina.
     Nasuada sends Eragon to attend the election of the new king of dwarves. He is nearly assassinated while there, and Orik is selected as king. After his coronation, Eragon and Saphira travel to Ellesmera, where they learn from Oromis and Glaedr that Galbatorix's power comes from the Eldunari, or the dragon's heart of hearts. Glaedr gives Eragon his, before he and Oromis head out to face Murtagh. Before they leave, Eragon goes to visit Rhunon, who made all Dragon Riders' swords. With her help, he indirectly makes his own sword, which he names Brisingr.
     After returning to the Varden, Eragon and Saphira see Oromis' death through Glaedr's eldunari. Roran, on the other hand, is sent on various missions. He succeeds in saving the mission, but is charged for insubordination. He is flogged as a punishment and is then promoted to commander.
     They lead a siege on Feinster, where Eragon rescues Arya. After commenting about his sword, they continue on to the main house. There, they find magicians who were creating a Shade. Despite killing them, a new shade named Varaug is born. Arya kills him quickly. Nasuada congratulates Eragon on a successful siege  and the story ends.