During Robert J. Callahan’s 24 years of practice as a Chicago criminal defense lawyer, he has developed highly effective strategies and techniques that have helped him achieve success for his clients. His process, which focuses on hands-on investigation and in-depth research, gives him and his firm an advantage over the prosecution and other attorneys. Because of their proficiency, Robert J. Callahan and his associates have earned respect from their clients and a reputation for success in the courtroom.