With Links of Steel, or The Peril of the Unknown is considered to be amongst the best detective tales ever. It belongs to the series of celebrated Nick Carter detective stories. Two business partners are robbed off a small fortune in diamonds by a notorious Kilgore diamond gang, a trio of very shrewd and dare crooks. They immediately call famous New York detective Nick Carter and that is how begins one of the most stirring and extraordinary criminal cases that ever fell within the broad experience of the famous New York detective. Nick Carter is a famous private detective, a fictional character invented by John R. Coryell and Ormond G. Smith. This private detective from thriller classics has appeared in a variety of formats over more than a century. His father, Sin Carter, was also a detective and he taught young Nick some investigation techniques from early ages. After his father's death during one case, Nick takes over the investigation and continues to work as a detective. A master of disguise, Nick Carter spends most of the time under cover and keeps a low profile, based in an apartment on Madison Avenue in New York.