Graham Gooch is a senior lecturer at the University of Central Lancashire, teaching law and criminal investigation. Following a very short period as a Pilot Officer in the Royal Air Force he joined the Metropolitan Police in 1971. Serving mainly in the CID, rising to the rank of detective chief inspector, he worked in various departments including the Metropolitan & City Police Company Fraud Department, and the Serious Fraud Office. On promotion to detective superintendent he transferred to the Lancashire Constabulary serving as Senior Investigating Officer. During his last years of service he read for a first degree in law followed by a Masters degree in law. On retiring from the police service in 2001 he took up his present post at the university. He is a member of the Chartered Management Institute and the Association of Law Teachers. He is a reviewer of the iolis legal material for the University of Warwick. Michael Williams has been involved with the investigation and prosecution of serious crime since joining the Royal Hong Kong Police in 1977. He later held commissioned rank in the Royal Australian Air Force Police and in the British Army Intelligence Corps. Michael is called as a Barrister in the Supreme Court of Queensland and the High Court of Australia and is admitted as a Solicitor in England and Wales. He is a former Senior Crown Prosecutor and Revenue and Customs Prosecutor in England and Wales, Legal Adviser to the Australian Federal Police, and Crown Counsel in Queensland, and is now an Advocate with the General Medical Council.