This handbook introduces the reader to the field of terrorism investigation. Describing how terrorists operate and how they differ from other criminals, it provides an outline of how terrorism investigations should be conducted. By helping investigators to develop skills and knowledge, this guide helps them to prepare prosecutable cases against terrorists. A practical handbook with extensive appendices: what to do in response to a terrorist attack, what not to do in response to a terrorist attack, bringing terrorists to justice, domestic terrorist attacks 2008-2010. Key terms and concepts, and selected extremist terms also included.