Focusing on Netflix's child and family-orientated platform exclusive content, this book offers the first exploration of a controversial genre cycle of dark science-fiction, horror, and fantasy television under Netflix's 'Family Watch Together TV' tag. Using a ground-breaking mix of methods including audience research, interface, and textual analysis, the book demonstrates how Netflix is producing dark family telefantasy content that is both reshaping child and family friendly TV genres and challenging earlier broadcast TV models around child-appropriate, family viewing. It illuminates how Netflix encourages family audiences to "watch together" through intergenerational dynamics that work on and offscreen. Chapters explore how this 'Netflixication' of family television developed across landmark examples including Stranger Things, A Series of Unfortunate Events, The Dark Crystal: Age of Resistance and even Squid Game. The book outlines how Netflix is consolidating a new dark family terrain in the streaming sector which is unsettling older concepts of family viewing leading to considerable audience and critical confusion around target audiences and viewer expectations. This book will be of particular interest to upper level undergraduates, graduates and scholars in the fields of television studies, screen genre studies, childhood studies, and cultural studies.