Spade work is a term used to describe the investigative work of a detective or private investigator. It involves SLEUTHING, which is the process of gathering information and evidence to solve cases. This type of work requires a great deal of patience and attention to detail in order to uncover the truth. Spade work is an important part of the job for any detective or private investigator, as it is necessary to uncover the facts in order to solve a case.