Christopher Mueller is the Henry S. Lindsley Professor of Procedure and Advocacy at the University of Colorado School of Law. Prior to joining the faculty of CU Law School, Christopher Mueller was a professor of law at the Universities of Illinois and Wyoming. His scholarship focuses on evidence law, particularly the rules governing hearsay and impeachment. His interest in hearsay stems from his interest in, as he says, 'the tension between the tendency of lawyers to interpret language grammatically and structurally and the human tendency to speak by indirection, analogy, idiom, and image.' He notes that 'hearsay doctrine is too often interpreted literally, and too often interpreted so as to overlook the senses in which language has operative effect.'

Evidence Under the Rules is in use in more than 100 law schools today. Professor Mueller and Professor Kirkpatrick have also written a five-volume treatise, Federal Evidence, that is updated annually and cited approximately twice a week by appellate courts across the country. They have also completed Modern Evidence, a one-volume source for judges and lawyers, and the student hornbook entitled Evidence, which sells thousands of copies a year and affects the education in evidence of many students across the country. Major media outlets and newspapers across the country have called on Professor Mueller's expertise during the coverage of important national trials. For example, in connection with the Oklahoma City bombing trial of Timothy McVeigh, Professor Mueller appeared several times on The Jim Lehrer Newshour, and was frequently interviewed on National Public Radio. Professor Mueller is currently working on a civil procedure coursebook, and on updating the treatises on federal evidence. In the future, he intends to develop his expertise in complex litigation, and to focus on developments in federal jurisdiction, the reform of federal rules, and developments in privilege law.