When a bullying incident sends twelve-year-old Nico Holland into Still Cove’s icy waters, Tyler, Emma, and Opal rush to his rescue—and discover a mysterious island. Though the island appears uninhabited, the kids know something about it is not right. And then they stumble upon an abandoned houseboat filled with curiosities, a dark secret churning in its depths. As the group delves into this new clubhouse, their lives intertwine in weird, dangerous ways. Something ancient has awakened . . . and it can detect not only their dreams, but also their darkest imaginings. Can they face the shadowy secrets lurking within their own hearts? Told from two alternating POVs, this pulse-racing tale starts a thrilling series about friendship and believing in yourself—and each other.