Man Who Knew, The by Edgar Wallace (1875 - 1932)

Saul Arthur Mann is a meticulous and eccentric individual. His life revolves around the gathering of every fact and statistic he can possibly acquire. As a consultant to the police, he is often called upon as a trusted and reliable resource. When a case of murder and fraud arises with regard to a local millionaire, he gladly offers his assistance but even he cannot always be sure of what he will discover. “The Man Who Knew” is a story full of mystery, love and revelation. (Summary by Howard Skyman)