Isabel Picornell, PhD, is a Visiting Research Fellow at the Aston Institute for Forensic Linguistics, UK. She is a certified Fraud Examiner and runs a forensic linguistic consultancy. Her main research interest is authorship in deceptive contexts. Ria Perkins, PhD, works as a civil servant for the Ministry of Defence, and is an Honorary Research Fellow at the Aston Institute for Forensic Linguistics in Birmingham, UK. Her casework specialty is authorship profiling, and her research interests include the language of persuasion and power, and Other Language Influence Detection (OLID). Malcolm Coulthard, PhD, is Emeritus Professor of Forensic Linguistics at Aston University, UK, where he founded the Centre for Forensic Linguistics. He was Foundation President of the International Association of Forensic Linguists and Founding Editor of the International Journal of Speech Language and the Law and Language and Law – Linguaegem e Direito.