Spectral Strands - Quests of Shadowind, #4

A family curse. An avenging evil spirit. The past and present collide!Deep Shadows have bound their dark powers together by an ancient ritual. Forming themselves into an unstoppable chindi, they've haunted the Oakes's family for generations, oppressing them under a murderous curse. Not one of their forefathers could prevent the ghostly rampages-not even Logan's and Mindy's own father. And now the avenging spirit is unleashing its terror on Shadowind.
In order to unravel the chindi's awesome power, the teen siblings must go back in time to discover the curse's frightful origin. Before they can hope to survive the terrifying discovery, they must piece together the mismatched clues of a malicious past. But the deeper they dig into their family's buried secrets, the more they shovel out their own graves. And time is running out. An ancient evil has awakened, blanketing Shadowind in the sleep of death.
The lives of Logan's and Mindy's friends depend on their every step-steps that lead them down a crooked path toward the chindi's deadly lair.