Get the Summary of Yasmin Angoe's Behind These Four Walls in 20 minutes. Behind These Four Walls (2026) by bestselling novelist Yasmin Angoe is a thriller about truth, power, and deep-seated family secrets. Orphaned young, Isla Thorne grew up in foster care in Florida. At 16, she planned to escape to Los Angeles with her only friend, Eden Galloway. But along the way, Eden vanished without a trace. A decade later, Isla is still searching for answers. Her investigation leads her to the opulent Corrigan estate in Virginia, the last place Eden went, claiming she had unfinished business there. Posing as a journalist, Isla embeds herself within the wealthy family and uncovers layers of corruption, secrets, and lies.