Tierno Monénembo’s late and only theatrical work is inseparable from all of his other literary work, composed exclusively of novels. La Tribu des gonzesses is fully integrated into the patient literary construction that the author has been pursuing for thirty years. In this text, T. Monénembo uses all the narrative and stylistic patterns which characterize his fictional universe. While inscribing itself in this coherent whole, La Tribu des gonzesses includes new, even innovative elements, which grant this unique piece a particular importance. The transition from one genre to another seems to have been for T. Monénembo a way of introducing new directions to explore. By its marginal position, the theater acts as a kind of laboratory for the writer. This article focuses on the passage from one genre to another and on the consequences of this transition, in a text which will be considered as a support for the scene-work.