Every night at exactly 9:47 PM, a bone-chilling howl echoes through Crestwood Heights. Children can't sleep. Families are terrified. Property values are plummeting. And Zoe Martinez's family is considering moving away.Marcus, Zoe, and Tyler have one week before winter break to solve their most personal case yet, because this time, the mystery threatens their own neighborhood.The howl isn't random. It happens at the exact same time every night, with the exact same terrifying intensity. The theories range from escaped exotic animals to something supernatural. But Marcus, Zoe, and Tyler know better. Everything has a rational explanation, they just need to find it.Their investigation leads them into the Hollow, a steep ravine at the edge of their street, and deep into Crestwood's hidden infrastructure. They'll explore underground drainage systems, uncover Prohibition-era secrets, and discover that sometimes the most frightening mysteries have the most surprising solutions.But as the community's panic grows and time runs out, the trio must face their biggest challenge: Can they remain objective when the mystery hits this close to home? Can they solve a case when their own families are affected? And can they prove that logic and science can defeat even the most primal fears?Perfect for fans of smart mysteries, authentic friendships, and stories that prove everything, even the unexplainable, has a rational explanation.Book 3 in the PHENOMENA series. Each book stands alone, but the friendship deepens with every mystery solved.Ages 12-16 Young Adult Mystery Standalone in Series