Some mysteries change what you know. This one changes who you are—and who you trust most. Chloe and Lily have always relied on each other. As sisters, they share an unspoken bond—one built on loyalty, quiet rivalry, and the certainty that no matter what happens, they face it together. But when a mysterious artifact known as the Obsidian Eye pulls them into a hidden world of secret societies and long-buried truths, that bond is put to its first real test. more