Russell Edwards has a Master's Degree in Business Administration from Middlesex University and a Postgraduate Diploma in Business Administration from Westminster University. He is currently managing director of Alexander Grace (Land Assets) Ltd in the UK, a company which he founded in 2009. It enables underprivileged youths to train in modern agriculture techniques and to develop initiative and creativity. His personal interests include cinema, theatre, fitness, architecture and interior design and London history, which is how he came to research Victorian London's East End and the crimes of Jack the Ripper. He lives with his wife Sally and their two children in Hadley Wood, North London. Dr. Jari Louhelainen is a Senior Lecturer in Molecular Biology at Liverpool John Moores University in the UK, as well as Associate Professor of Biochemistry at the University of Helsinki. He has two major lines of research at Liverpool: mammalian/medical genetics, working with their sports science department of the university; and forensics, working with the forensics department.

In his resume on the Liverpool John Moores University website, his expertise in the forensic area includes 'determination of age of forensic samples', 'new methods for forensic imaging applications of Next Generation sequencing for forensics' and 'human identification using novel genetic methods'.