An anthology series produced by Thames Television, comprised of short mystery, suspense or crime adaptations featuring, as the title suggests, detectives who were literary contemporaries of Arthur Conan Doyle's Sherlock Holmes.
A young couple attend a masked ball before their planned (but secret) elopement. Suddenly everything goes wrong when the young woman is attacked and held hostage by a crazed attacker.
Based on the spy novel of the same name by Jacques Futrelle.
