Mary W. Chase died on Nantucket Island just over one hundred years ago, but she is still there, in the house she once lived in, and she wants to keep it that way-- but first she must somehow contact a group of children who are interested in preserving historic homes on the island.

Nancy's classmate, Willa, needs her help. Willa is convinced something is terribly wrong with her friend Izzy, but everyone has dismissed Willa's concerns, saying it's just teen angst. But Willa thinks it's more than that; she thinks Izzy is possessed.

Poppy Caldwell is an orphan who keeps seeing a figure standing behind her in the mirror at the group home where she lives, but she does not associate this ghost with the letter that mysteriously appears in her file, claiming to be from a long-lost aunt, and inviting her to Larkspur House--and she is just one of five children who find themselves gathered in this strange house with a deadly past, and apparently no intention of letting the children escape....

It's strange enough for Tamal to be the new kid in town. But it's even stranger to be living in the house that everyone wants to avoid, a house with a very deadly history. Nobody wants to talk about what happened ... nobody except the terrifying girl Tamal keeps encountering throughout the house. Tamal's parents can't see her, but he's sure she's there -- and wants something from him. Tamal's family thought this house would be a new start ... but...

Sarah, her brother Billy, and her parents are moving into her deceased grandmother's house for the summer in order to fix it up and sell it, but this is a house of locked rooms and many dark and dangerous secrets.

Ugly Cat and Pablo the mouse set out to look for Ugly's missing brother, gathering friends along the way--because evidence points to the haunted Herrera house, and they will need all the help they can summon to take on a ghost and free Tamarindo.

When Mandie and her friend Celia begin classes at the Charleston Ladies College, they must contend with unfriendly classmates and rumors of a haunted house.

After the loss of her mother, Chloe Kennedy again starts seeing the ghosts that haunted her as a child. Spending time at her grandmother's country estate in England is Chloe's chance to get away from her grief and the spirits that trouble her. Until she meets a mysterious stranger... Alexander Reade is 157 years dead, with secrets darker than the lake surrounding Grange Hall and a lifelike presence that draws Chloe more strongly than any ghost before....