Yen Nan-Hsiang is a notable figure in the realm of Taiwanese cinema, particularly revered for his contributions to the genre of horror and exploitation films during the late 1970s. His cult classic, *The Criminals, Part 5: The Teenager's Nightmare* (1977), stands out as a quintessential example of the era's boundary-pushing storytelling. This film has gained a dedicated following among collectors due to its unique blend of social commentary and shocking visuals, making it a prized possession for enthusiasts of vintage Asian cinema. Collectors are particularly drawn to Yen's work for its rarity and the cultural significance it encapsulates. His films often reflect the societal anxieties of their time, and *The Teenager's Nightmare* is no exception, capturing the youth's rebellion against traditional norms. The film's limited home video releases have added to its allure, with collectors avidly seeking out original VHS tapes and rare DVD editions. Yen Nan-Hsiang's contributions to physical media not only enrich our film history but also offer a glimpse into a transformative period in Taiwanese filmmaking.