This chapter introduces the anthology Teen TV and its main research object. First, the chapter discusses the crucial term of teen TV. This term firstly describes depictions of youth in television. Thereby it must be considered that in individualised and differentiated societies youth can have very diverse manifestations. Fictional youth dramas, which are the special focus of this book, not only represent various facets of adolescence but also help to shape and construct youth as part of a commercial teenage culture. In this context, the term teen TV also refers to a specific target group. In addition to the official audience pursued by the television industry, actual or non-intended young viewers can be used to define teen TV. After the discussion of the term, the chapter explores teen TV as a genre. For all its hybridity, what is common to the genre is that it negotiates challenges in identity development in adolescence. In doing so, many teen TV dramas display a high degree of self-referentiality. Again and again, teen TV productions refer back to their cultural histories. The introduction explores this history especially in the context of US popular culture. In addition, current and former approaches to teen TV in German television fiction receive focused attention. Finally, the chapter looks at contemporary tendencies in a transnational and digital media environment.