The arrival of Fulbright Scholar Nuria Pelechano into our research group led to an in depth study of crowd simulation. We explored inter-agent communication, enhancements to the social force movement model, and the live, virtual reality experience of presence in a crowd. Ben Sunshine-Hill invents alibi generation, in order to justify agent pedestrian behaviors in an urban setting. The crucial insight is that alibis are created only when an agent is followed by the player.