Set against the backdrop of the infamous Willowbrook State School in Staten Island during the 1970s, 'The Lost Girls of Willowbrook' is a poignant tale of deception, resilience, and the unbreakable bond between sisters. Sage Winters, still mourning the loss of her identical twin, Rosemary, is shocked to learn her sister was not dead but hidden away in the notorious institution. Determined to uncover the truth and find Rosemary, Sage embarks on a harrowing journey that leads her into the very halls of Willowbrook. Mistaken for her twin, Sage experiences the haunting realities of a place veiled in secrets and suffering. Ellen Marie Wiseman weaves a historical narrative that not only sheds light on the dark corners of the past but also explores the depths of love and the strength of the human spirit.