We need beautiful models. Models attract and hold your attention. They excite you. They prompt action. And action, excitement, and focus is exactly what is needed to defend IT. By models, of course, we mean threat models. Intricate and beautiful, a good threat model tells a story. It indicates what we are protecting and where the attacks may come from. Done right, modelling highlights both the strengths and weaknesses of our IT. It becomes a means for strengthening and focusing our efforts. We need beautiful models to see what is and what could be. This session will explore threat modeling as part of the secure development lifecycle. A case study will be presented. The stories are real and only the names have been changed to protect the innocent. Beautiful Models answers the question: what is it that makes a threat model beautiful and actionable?