The Vidocq Society and its three co-founders, including Walter, were the subject of a 2010 book by Michael Capuzzo. The book is titled "The Murder Room: The Heirs of Sherlock Holmes Gather to Solve the World's Most Perplexing Cold Cases". Walter is also a Fellow of the American Academy of Forensic Sciences, a Fellow of the Royal Society of Medicine/Clinical Forensic Medicine, A Fellow of the Australasian College of Biomedical Sciences and a 22-year veteran prison psychologist for the state of Michigan.