A group of girls in Claire's town have noticed strange sights and sounds coming from the tree house where their club meets. Is it a rival boys club trying to scare them away? Or is it a ghost? The girls ask Claire to tackle the mystery--and Kaz hopes to finally find the rest of his missing family members!

Fifth-graders Parker and Lucas get more than they bargained for when they seek to debunk one of Wolver Hollow's greatest legends about a haunted mustache that, every year on the anniversary of its owner's death, seeks a lip to claim as its own. "Parker, Lucas, and Samantha von Oppelstein know something spooky and strange always happens in Wolver Hollow. But even they find it hard to believe a mustache (that's right: a mustache!) haunts their town...

Everyone in Grey Hills knows about the fire that burned down the old high school fifty years ago. Macy Pierce grew up hearing horror stories about the students who burned alive inside it. It was a tragic accident... right? After Macy's brother dies over the summer, she doesn't expect the first day of her junior year to feel normal. But when she starts seeing things, includeing a teacher bursting into flames, she begins to question her own sanity....

A long forgotten mystery may decide the fate of the world. The group is fractured as Sam races against time to find a cure for Jackson before it is too late. Meanwhile, an important figure from Trev's past resurfaces, forcing him to decide once and for all where his loyalties lie.

What really happened during the Fire of 1966? Go back in time and see the famous tragedy through the eyes of student Henry Grey, and history teacher Lorna Evans. Henry's uncle, Principle Grey, is teaching Henry to fight ghosts, but is there something his uncle isn't telling him? Lorna returns to Grey Hills after inheriting her father's house. She also inherits an urn of her grandfather's ashes, which may contain more than first meets the eye.

"Sixteen year-old Taylor Oh is cursed: if she is touched by the ghost of a murder victim then they pass a mark beneath her skin. She has three weeks to find their murderer and pass the mark to them - letting justice take place and sending them into the Darkness. And if she doesn't make it in time? The Darkness will come for her...She spends her life trying to avoid ghosts, make it through school where she's bullied by popular Justin and his cronies,...