Matthew Johll Dr. Matthew Johll is Professor of Chemistry and Adjunct Professor of Forensic Science at Illinois Valley Community College, where he teaches introductory and general chemistry courses. Dr. Johll received his B.S. in Chemistry from the University of Wisconsin-Platteville, and his Ph.D. in Analytical Chemistry from Iowa State University. In addition to his twenty years of teaching, he has also served as an expert witness/consultant for several murder cases in the United Kingdom, including a BBC investigation into a serial killer. He has also consulted on a Jane Doe case in central Illinois, in which new scientific methods are being employed to identify the victim. When he is not writing, editing, grading, or teaching, he can be found camping with his three sons and serving as Scoutmaster for their Boy Scout troop. He was recently honored with the National Outstanding Eagle Scout award for his professional achievements.