The continuing adventures of Tom, the seventh son of a seventh son and apprentice to the local Spook, who faces danger and death daily in his job protecting the region from evil.

When shy sixteen-year-old Helen Hamilton starts having vivid dreams about three ancient, hideous women and suddenly tries to kill a new student at her Nantucket high school, she discovers that she is playing out some version of an old tale involving Helen of Troy, the Three Furies, and a mythic battle.

After fifteen-year-old Chloe starts seeing ghosts and is sent to Lyle House, a mysterious group home for mentally disturbed teenagers, she soon discovers that neither Lyle House nor its inhabitants are exactly what they seem, and that she and her new friends are in danger.

Slither lurks in woods and towns, hunting for human blood, but before he can feast on three lovely sisters, their dying father binds the monster to a bargain.

Conditions worsen for the remaining young residents of a small California coastal town isolated by supernatural events when their food supplies dwindle and the Darkness underground awakens.

Having escaped Miss Peregrine's island by the skin of their teeth, Jacob and his new friends must journey to London (circa 1940), the "peculiar" capital of the world.

With goblins, trolls, and the house boggart all trying to get them, the Grace children turn to Great Aunt Lucinda for help.

Returning from Greece, Tom and the Spook find that their home, including the Spook's precious library of knowledge, has been burned to the ground, and that their battle against the denizens of the dark must continue.

A deadly, flu-like epidemic and a plague of flesh-eating creatures threaten the lives of the children at Perdido Beach while Sam, Astrid, Caine, and Diana each struggle with doubts and uncertainties.

When witches steal Tom's inheritance and kidnap his relatives, Tom, the Spook, and Alice set out for Pendle Hill, a particularly dangerous district, in hopes of preventing the three witch clans from uniting to raise the Fiend, the Devil himself, thus bringing about an age of darkness.