In Karen McManus's first three young adult novels--"One of Us is Lying" (2017), "One of Us is Next" (2020), and "Two Can Keep a Secret" (2019)--dead teen bodies are literary cyphers around which adolescent characters learn to navigate intersectional injustices. McManus fulfills John Charles belief that all genres, including mystery-crime, are dynamic and iterative, doing so by recalibrating her novels as across-genre intersections: mystery-crime and multimedia literacies (e.g., social media, texting, graffiti). In the hands of adolescent readers, young adult literature like McManus's become agents for discovery: whodunnit and who am I as I emerge into adulthood? "One of Us is Lying," "One of Us is Next," and "Two Can Keep a Secret" invite emergent adults into joint attention with fictional characters, through first-person narrations, to learn about and discover strategies for negotiating young adult entanglements with ideological and material injustices.