Nine Perfect Strangers" by Liane Moriarty is a suspenseful and thought-provoking novel that explores the lives of nine individuals who come together at a boutique health-and-wellness resort called Tranquillum House, seeking transformation and healing. Over the course of ten days, the strangers, each with their own secrets and personal demons, are taken on an unexpected journey by the resort's enigmatic owner, Masha. As the retreat unfolds with unconventional and increasingly intense methods, the guests' lives are intertwined, leading to moments of insight, compassion, and unsettling revelations.