The highly anticipated final installment in Beiko's thrilling YA fantasy trilogy It's been seven years since the Denziens, an unseen people with elemental powers, were unmasked, and seven years since Roan Harken and Eli Rathgar disappeared into the Brilliant Dark. Marked by Darklings and Death alike, Saskia is a mechanically minded Mundane, raised by Barton and Phae on daring stories about Roan Harken. But the world Roan left behind is in turmoil. The Darklings now hang in the sky as a threatening black moon, and with the order-maintaining Elemental Task Guard looking to get rid of all Denziens before they rebel, Saskia's only option is to go into the Brilliant Dark and bring Roan back. But nothing is ever that simple. The Brilliant Dark is the final, thrilling chapter in this series about gods, monsters, and the people who must decide if they're willing to pay the ultimate price to protect the family they found . . . in a world that may not be worthy of saving.