Below Forsaken Mountain, a plot is being hatched to overthrow the tyrant king of Trollus, and Marc is the right-hand man of its leader. His involvement is information more than one troll would kill to possess, which is why he must keep it a secret from everyone, even the girl he loves. After accidentally ruining her sister's chance to become queen, Pénélope is given one last opportunity by her father, the Duke d'Angoulême, to make herself useful: she must find proof that the boy she's in love with is conspiring against the crown.

Four months have passed since the shadow stone fell into Kell's possession. Four months since his path crossed with Delilah Bard. Four months since Rhy was wounded and the Dane twins fell, and the stone was cast with Holland's dying body through the rift, and into Black London. In many ways, things have almost returned to normal, though Rhy is more sober, and Kell is now plagued by his guilt.

Before borders were drawn, before treaties were signed, before wars were waged anew, before the great kingdoms of the Remnant were even born and the world of old was only a hazy slate of memory told in story and legend, a girl and her family fought to survive. And that girl's name was Morrighan.

No one expects a princess to be brutal. And Lada Dragwlya likes it that way. Ever since she and her gentle younger brother, Radu, were wrenched from their homeland of Wallachia and abandoned by their father to be raised in the Ottoman courts, Lada has known that being ruthless is the key to survival. She and Radu are doomed to act as pawns in a vicious game, an unseen sword hovering over their every move. For the lineage that makes them special also makes them targets.

Zélie Adebola remembers when the soil of Orïsha hummed with magic. Burners ignited flames, Tiders beckoned waves, and Zélie's Reaper mother summoned forth souls. But everything changed the night magic disappeared. Under the orders of a ruthless king, maji were killed, leaving Zélie without a mother and her people without hope. Now Zélie has one chance to bring back magic and strike against the monarchy. With the help of a rogue princess, Zélie must outwit and outrun the crown prince, who is hell-bent on eradicating magic for good.