<P> Palpatine returns physically in season four (voiced again by Ian McDiarmid). In the episodes "Wolves and a Door" and "A World Between Worlds", he appears as a hologram overseeing the excavation of the Lothal Jedi Temple, which contains a portal to a separate dimension of the Force outside of space and time, which Palpatine considers a' conduit between the living and the dead' and could give him unrivaled power of the Force itself if he can access it . Shortly after Ezra Bridger reaches through time and space to rescue Ahsoka from being killed by Vader, Palpatine sets up a portal that shows Kanan Jarrus's final moments . While Ezra wants to reach through the portal and rescue Kanan, Ahsoka dissuades Ezra from it . Palpatine then reveals himself through the portal and attempts to gain access to the world by shooting fiery Sith energy that can allow him to gain access if the energy can tie down Ezra for long enough . However, Ahsoka and Ezra manage to evade him and both go their separate ways, thus denying Palpatine full power . </P> <P> Palpatine later returns in the series finale "Family Reunion - and Farewell". In the episode, Ezra, having surrendered himself to Thrawn to protect Lothal, is taken by him to a room containing a reconstructed section of the ruined Jedi Temple and a hologram of Palpatine's pre-disfigurement self from the prequel trilogy . Palpatine, having acknowledged the threat Ezra faces to the Empire, presents himself as a kindly figure and shows Ezra a vision of his dead parents through a doorway, promising that the youth will be with them if entering it . Ezra is initially mesmerized by Palpatine's promise and goes to enter the door, but finally resists and destroys the reconstructed Jedi Temple and the illusion . Palpatine's hologram emerges from the rubble, flickering to show his true self, and commands his Royal Guards to kill Ezra, though Ezra manages to defeat them and escape . According to series creator Dave Filoni, the events of Rogue One and A New Hope happen shortly after this episode, thus refocusing Palpatine's attention from Ezra and Lothal's liberation to the Rebel Alliance and Luke Skywalker . </P> <P> The first appearance of Palpatine in Star Wars literature was in Alan Dean Foster's (writing as George Lucas) novelization of the script of A New Hope, published as Star Wars: From the Adventures of Luke Skywalker (1976). </P> <P> Star Wars: Lords of the Sith was subsequently announced as one of the first four canon novels to be released in 2014 and 2015 . In Lords of the Sith, Vader and Palpatine find themselves hunted by revolutionaries on the Twi'lek planet Ryloth . </P>

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