When the Alden children go camping on Blizzard Mountain, a place said to be inhabited by a ghost looking for buried treasure, they begin to think someone or something is trying to scare them off.

Deirdre "Foxtrot" Lancaster returns-with her animal companions-for-life Whiskey and Tango-to fish for clues on the other side of death...
When zillionairess Zelda Zoransky decides to throw one of her famous parties-with a guest list as colorful and diverse as her private zoo-it's up to Deirdre "Foxtrot" Lancaster, assistant extraordinaire, to pull the whole thing off. But even with the help of her telepathic cat Tango and ectoplasmic

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Second-grade detectives Jigsaw, Mila, and their friends follow clues when a girl reports seeing a glow-in-the-dark ghost dancing at night in their school.

When a confident girl named Princess arrives to spend a week at Roddy's house, she encourages him to help her investigate the suspicious activities happening at a supposedly haunted house.

Staying in an old Victorian mansion while on a trip to San Francisco, Nancy investigates the "spirits" that are scaring people away.

When he accidentally trips over a grave Stan Summer lands in the middle of a century-old feud between two rival ghost families, and finds himself cast in the role of peacemaker.

When their friend Tina Maria Carlos tells them her family is moving away because their house is haunted, the Makers (Michael, his cousin Liv, and their friend Leo) set out to investigate--Liv believes the ghost is real and wants to prove it, but Michael is convinced that someone is creating a clever illustion, and he wants to know how and why.

"Ophelia Harrison used to live in a small house in the Georgia countryside. But that was before the night in November 1922, and the cruel act that took her home and her father from her. Which was the same night that Ophie learned she can see ghosts. Now Ophie and her mother are living in Pittsburgh with relatives they barely know. In the hopes of earning enough money to get their own place, Mama has gotten Ophie a job as a maid in the same old manor...

With her beagle Henry and her new friend Quin, twelve-year-old Tee is determined to solve the mystery of "the Shadow", the ghostly animal that is believed to haunt the Alaskan wilderness near her new home in Nome.

When the fire station's new dog, Sparky, finds a ghost at the door of the TV room, Kaz and Claire investigate, hoping the ghost may be one of Kaz's relatives.