Feeling suspicious about a gorgeous high school librarian who has become the object of her best friend's affections, Cynthia discovers that the man is actually a demon who is sucking the life force from the entire student population.

"A fictional guide to the Shadowhunter's universe"--

Twelve-year-old Max and his allies risk much as they seek to acquire the Book of Origins, an artifact of unimaginable power, in hopes of halting the ancient evil that is bringing the world to its knees.

"With the return of the sorcerer Bram, and the disappearance of Asteroth, Rowan Academy must prepare to battle the demon Prusias"--

When demons begin appearing on Earth unpredictably, foreshadowing a cataclysmic breakdown of their magic, Artemis and his friends face a new foe--a twelve-year-old girl whose intellect just might match Artemis's own--as they try to prevent catastrophe.

After learning that she is capable of dangerous magic, Sophie Mercer goes to England with her father, friend Jenna, and Cal hoping to have her powers removed, but soon she learns that she is being hunted by the Eye--and haunted by Elodie.

Stable boy Arcturus accidentally becomes Hominum's first common summoner and is whisked away to Vocans Academy, but before he can settle in he must choose a side or watch the Empire crumble.

When eighteen-year-old Alessa's power to slay demons mysteriously disappears, she hires Dante, a cynical outcast marked as a killer, to become her bodyguard, and soon discovers he is either the one person who can help her master her gift or the one who destroys her.

"After discovering his true identity, a new enemy is after Vero Leland--a demoness known as the Lilith, and she will stop at nothing to destroy him, including attacking those closest to him"--

When twelve-year-old Will Wilder uses the Amulet of Power to get on the Perilous Falls football team, he attracts dark forces that shadow townspeople, disturb graves, and lull many into a stupor.