Hijo Dorado by Pierce Brown

In a gripping continuation of a dystopian saga, the protagonist, Darrow, navigates the treacherous world of the Golds, the ruling class of a color-coded society. As a Red, he was born to toil beneath the surface of Mars, but now, disguised as a Gold, he infiltrates their ranks to dismantle the oppressive regime from within. Amidst political intrigue, fierce battles, and shifting alliances, Darrow struggles with his identity and the moral complexities of his mission, all while striving to ignite a revolution that could change the fate of humanity.