From amazon.com:

For a decade, Darrow led a revolution against the corrupt color-coded Society. Now, outlawed by the very Republic he founded, he wages a rogue war on Mercury in hopes that he can still salvage the dream of Eo. But as he leaves death and destruction in his wake, is he still the hero who broke the chains? Or will another legend rise to take his place?

Lysander au Lune, the heir in exile, has returned to the Core. Determined to bring peace back to mankind at the edge of his sword, he must overcome or unite the treacherous Gold families of the Core and face down Darrow over the skies of war-torn Mercury.

But theirs are not the only fates hanging in the balance.

On Luna, Mustang, Sovereign of the Republic, campaigns to unite the Republic behind her husband. Beset by political and criminal enemies, can she outwit her opponents in time to save him?

Once a Red refugee, young Lyria now stands accused of treason, and her only hope is a desperate escape with unlikely new allies.

Abducted by a new threat to the Republic, Pax and Electra, the children of Darrow and Sevro, must trust in Ephraim, a thief, for their salvation - and Ephraim must look to them for his chance at redemption.

As alliances shift, break, and re-form - and power is seized, lost, and reclaimed - every player is at risk in a game of conquest that could turn the Rising into a new Dark Age.

From amazon.com:

With shades of The Hunger Games, Ender's Game, and Game of Thrones, debut author Pierce Brown's genre-defying epic Red Rising hit the ground running and wasted no time becoming a sensation. Golden Son continues the stunning saga of Darrow, a rebel forged by tragedy, battling to lead his oppressed people to freedom from the overlords of a brutal elitist future built on lies. Now fully embedded among the Gold ruling class, Darrow continues his work to bring down Society from within.

A life-or-death tale of vengeance with an unforgettable hero at its heart, Golden Son guarantees Pierce Brown's continuing status as one of fiction's most exciting new voices.

From amazon.com:

Honor and betrayal fuel a caste-shattering revolution in the action-packed new novel from the number one New York Times best-selling author of the Red Rising Trilogy.

Ten years after the events of Morning Star, Darrow and the Rising are battling the remaining Gold loyalist forces and are closer than ever to abolishing the color-coded caste system of Society for good. But new foes will emerge from the shadows to threaten the imperfect victory Darrow and his friends have earned. Pierce Brown expands the size and scope of his impressive Red Rising universe with new characters, enemies, and conflicts among the stars.

From amazon.com:

Darrow would have lived in peace, but his enemies brought him war. The Gold overlords demanded his obedience, hanged his wife, and enslaved his people. But Darrow is determined to fight back. Risking everything to transform himself and breach Gold society, Darrow has battled to survive the cutthroat rivalries that breed Society's mightiest warriors, climbed the ranks, and waited patiently to unleash the revolution that will tear the hierarchy apart from within.

Finally, the time has come.

But devotion to honor and hunger for vengeance run deep on both sides. Darrow and his comrades-in-arms face powerful enemies without scruple or mercy. Among them are some Darrow once considered friends. To win, Darrow will need to inspire those shackled in darkness to break their chains, unmake the world their cruel masters have built, and claim a destiny too long denied - and too glorious to surrender.

From amazon.com:

Darrow is a Red, a member of the lowest caste in the color-coded society of the future. Like his fellow Reds, he works all day, believing that he and his people are making the surface of Mars livable for future generations. Yet he spends his life willingly, knowing that his blood and sweat will one day result in a better world for his children. But Darrow and his kind have been betrayed. Soon he discovers that humanity reached the surface generations ago. Vast cities and sprawling parks spread across the planet.

Darrow - and Reds like him - are nothing more than slaves to a decadent ruling class. Inspired by a longing for justice, and driven by the memory of lost love, Darrow sacrifices everything to infiltrate the legendary Institute, a proving ground for the dominant Gold caste, where the next generation of humanity's overlords struggle for power. He will be forced to compete for his life and the very future of civilization against the best and most brutal of Society's ruling class. There, he will stop at nothing to bring down his enemies...even if it means he has to become one of them to do so.