This past August the Illinois Appellate Court, in Yarbrough v. Northwestern Memorial Hosp., suggested there was never a need to join, or to continue to join, an agent when pursuing a vicarious liability lawsuit against its principal. Herein, we review this statement in Yarbrough. We then counsel lawyers and judges regarding future suits against principals based on the acts of agents. When it reviews the apparent agent issue in Yarbrough, perhaps the Supreme Court will clarify when the joinder of principals and agents may be required.