Betrothed to the demon who rules her country and trained all her life to kill him, seventeen-year-old Nyx Triskelion must now fulfill her destiny and move to the castle to be his wife.

Every other day, sixteen-year-old high school student Kali transforms into an invincible demon hunter, but when she sees that a popular fellow-student is marked for death in the next twenty-four hours, unfortunately it is the wrong day for Kali.

When twelve-year-old, psychic ghost hunter Alannah Malarra faces demons from another dimension, rather than the treasure-hoarding ghosts she is used to, she needs the help of protectors from the Attack-ready Network of Global Evanescent Law-enforcers (A.N.G.E.L.) police force to help her quell the dangerous uprising.

"Emilia and her twin sister Vittoria are streghe - witches who live secretly among humans, avoiding notice and persecution. One night, Vittoria misses dinner service at the family's renowned Sicilian restaurant. Emilia soon finds the body of her beloved twin...desecrated beyond belief. Devastated, Emilia sets out to find her sister's killer and to seek vengeance at any cost-even if it means using dark magic that's been long forbidden. Then Emilia...

As Fjerda's massive army prepares to invade, Nikolai Lantsov will summon every bit of his ingenuity and charm to win this fight, and Zoya Nazyalensky must embrace her powers to become the weapon her country needs, meanwhile Nina Zenik risks discovery and death as she wages war on Fjerda from inside its capital.

Still pursuing a cure for her mother's enchantment, Clary uses all her powers and ingenuity to get into Idris, the forbidden country of the secretive Shadowhunters, and to its capital, the City of Glass, where with the help of a newfound friend, Sebastian, she uncovers important truths about her family's past that will not only help save her mother but all those that she holds most dear.