Theatre is a privileged medium for expressing and conveying emotions. Emotions play a significant role in audience engagement when communicating to create awareness and knowledge about a given subject. The Marionet Theatre Company has created a series of theatre performances related to health sciences over the past few years, to expand knowledge and reduce the stigma frequently associated with certain diseases. In this report on practice, we present the process of developing the theatre performance Oxymoron, between solstices and equinoxes, exploring bipolar disorder and its consequences. The artistic team devised the performance after a series of interviews with both patients and mental health professionals. In this article, we discuss the process of its creation, identify dramaturgical connections between the performance and the interviews, and examine the emotional engagement it provoked in the audience. We conclude by assessing the effectiveness of theatre in communicating health-related subjects, most particularly by involving the audience emotionally.