Dr Johannes Keiler (Mag. iur., LLM) is an assistant professor in criminal law at the University Maastricht. He studied law at the Leopold-Franzens-Universität Innsbruck and at the University of Amsterdam. In 2007 he joined Maastricht University as a PhD researcher and lecturer. In 2013 he defended his dissertation ‘Actus reus and participation in European criminal law’. It was awarded the Modderman Prize for best dissertation in the field of criminal law in 2014. Dr Keiler lectures in subjects including comparative criminal law, criminal procedure, European criminal law and cooperation in criminal matters.