The episode 'Monstrum: Changeling,' part of the 'Monstrum' series, explores the fascinating and eerie folklore of changelings. Hosted by Dr. Emily Zarka, the video dives into the historical and cultural roots of changeling legends across German, Scandinavian, and Celtic cultures. Key themes include how changeling lore was used in theological texts and connected to perceptions of demons in the Christian context, as illustrated in texts like 'De Universo' and 'Malleus Maleficarum.' Throughout history, these narratives have been intertwined with misunderstandings about mental illness and disabilities, sometimes justifying harmful behaviors toward those perceived as different. The video discusses the portrayal of changelings in various literature, including Shakespeare's works, and highlights the ongoing intrigue surrounding changeling mythology in contemporary culture. By examining changelings, the video raises thought-provoking questions about identity, acceptance, and the fear of imposters.