When little, twelve-year-old Molly arrives at Castle Hangnail to fill the vacancy for a wicked witch, the minions who dwell there have no choice but to give her the job and at first it seems she will be able to keep the castle open, but Molly has quite a few secrets that could cause trouble.

Discovering her ability to see ghosts when a cruel act ends her father's life and forces her to move in with relatives in 1920s Pittsburgh, young Ophelia forges a helpful bond with a spirit whose own life ended suddenly and unjustly.

When best friends Lena and Abby find an old Polaroid camera at a thrift shop, they're creeped out by the images it produces, which include the shadowy figure of a boy they've never seen before.

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.

Follows three young operatives of a Psychic Detection Agency as they battle an epidemic of ghosts in London.

"Casey Slater can't believe her bad luck. Instead of the perfect summer vacation she'd planned, Casey is in a remote country town, where her parents are restoring an old, creaky, creepy house. Worst of all, everyone in town thinks the house is haunted. Soon Casey thinks so, too--a vase explodes, a china cabinet falls over on its own--and it seems like the ghost doesn't want them there. Casey thought she'd be dying of boredom, but now she's scared...

Harper doesn't trust her new home from the moment she steps inside, and the rumors are that the Raine family's new house is haunted. Harper isn't sure she believes those rumors, until her younger brother, Michael, starts acting strangely. She knows that the memories she's blocking will help make sense of her brother's behavior and the strange and threatening sensations she feels in this house, but will she be able to put the pieces together in time?...

Sixth-grader Jules is used to moving into old houses. Her dad, who specializes in historical renovation, restores them to their former glory. This time, she's worried their new old house, a crumbling Virginia mansion, is haunted. Though she is staying in a modern addition, she has visions of the past from the point of view of a girl named Lily. Nightly, Jules hears a ghostly reenactment of angry men storming the home and Lily barricading herself in...

On Halloween, Scott and Amanda plan to get revenge on their bullies by luring them into a supposedly haunted house filled with traps, but soon the house has plans of its own.

"Geronimo receives a mysterious package. It was a coffin. And it was gift-wrapped! It was an invitation to a spine-tingling mystery dinner at Cacklefur Castle. Geronimo, Thea, and Trap find spiders, bats, and ... something slimy. Can Geronimo solve the mystery before he is frightened out of his fur?"--Amazon.com