As Ansel Elgort's star grows, it seems like he could be set for more screen time in the Divergent sequel after not having much to do in the first movie. But will he also betray Tris, his sister, in the sequel and what could that mean moving forward?

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In the book, Caleb (Elgort) arrives at the Amity compound with the others aboard the Dauntless train. When the Erudite and Dauntless arrive, he is among those who successfully escape and meet the factionless group on the train.

They are brought to the Factionless sector of the city before he goes to the Abnegation with Susan. After the attack of the Dauntless traitors on Candor, he arrives at the Candor compound with Marcus. Tris later teases him with Susan, who he has apparently been flirting with during the Abnegation years. He later leaves again, supposedly for the Abnegation.

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When Tris surrenders herself to the Erudite for testing to protect the Dauntless, it is revealed that he has been working for Erudite all along and has leaked information to Jeanine about Tris's aptitude test results.

When Evelyn's group and Marcus' group invade the Erudite headquarters, separately, Caleb catches Marcus' group in the control room and tries to stop them, but is knocked out by Marcus. Tris reluctantly left the scene, continuing the mission.

With Caleb betraying Tris and leading up to a massive decision in the next book, it could mean that Elgort will be headed for a lot more time on screen in this movie and he could be one of the major players.

Insurgent is set to open in theaters on March 20, 2015.