An unexpected invitation to a crumbling seaside sanctuary changes everything for Matilda. She has never met her father, the visionary and reclusive artist Kingsley Cello. So when a letter arrives out of the blue inviting her to spend the summer at his estate, Hidden Beach, she jumps at the chance to finally understand where she comes from. But the coastal home holds far more shadows than answers. When she arrives, Kingsley is nowhere to be found. Instead, Matilda is greeted by a house full of strangers and secrets. There is Meer, the openhearted brother she never knew existed; Brock, a former child star wrestling with his own dark past; and Tatum, a brooding and wild presence who makes it clear Matilda is not welcome. Desperate for the truth, Matilda begins to dig into the twisted history of Hidden Beach. But in a house where everyone has something to hide, uncovering the truth might be the most dangerous game of all. Blood may be thick, but at this estate, the lies run even deeper.