Can the inadvertent clashes between collaborators produce more powerful effects than their concordances? For Thomas Middleton and William Rowley, the playwriting team best known for their tragedy The Changeling , disagreements and friction proved quite beneficial for their work. This first full-length study of Middleton and Rowley uses their plays to propose a new model for the study of collaborative authorship in early modern English drama. David Nicol highlights the diverse forms of collaborative relationships that factor into a play’s meaning, including playwrights, actors, companies, playhouses, and patrons. This kaleidoscopic approach, which views the plays from all these perspectives, throws new light on the Middleton-Rowley oeuvre and on early modern dramatic collaboration as a whole.