This essay studies how male and female perpetrators are constructed in the discussion forum Flashback Forum. Gender-theoretic media research has mainly studied differences in traditional media, such as TV, radio and press. Yet, due to the rise of social media, there has recently been an increased research interest in this type of medium. However, an absence has been identified in terms of gender-theoretical media research on social and digital media like Flashback. Flashback Forum is a Swedish discussion forum, which has no equivalent due to its unique and remissive climate of debate. Therefore, this essay studies the comparison of how the posts of Flashback users construct male and female in the context of crime. The study is based on gender theory and the material is analyzed through critical discourse analysis. The results indicate that there are differences regarding the actor construction of the male and female perpetrators, which leads us to the conclusion that these can be explained by social constructions of gender. This essay mainly aims to contribute to the identified absence of such research and also encourage scholars to study gender constructions on social and digital media.