Everyone knows his name. Everyone thinks they know his story.

Rome, 37 AD. The emperor is in his final days. No one knows how much time he has left. The struggle for power begins.

When the ailing Tiberius throws Caligula's family into the succession battle, in an attempt to restore order, he will change the fate of the empire and create one of history's most notorious tyrants, Caligula. But was he really a monster?

Forget everything you thought you knew. And let Livilla, Caligula's younger sister and confidante, tell you what really happened. How her calm and gentle brother became the most powerful man on earth. And how, with lies, murders, and betrayals, Rome was changed forever...