Charlie Webb is a third-rate lawyer who graduated from a third-rate law school and has opened his own law firm, where he gets by handling cases for dubious associates from his youth and some court-appointed cases. In AN INSIGNIFICANT CASE, he’s appointed to be the attorney for a decidedly crackpot artist who calls himself Guido Sabatini (born Lawrence Weiss). Sabatini has been arrested --- again --- for breaking into a restaurant and stealing back a painting he sold them because he was insulted by where it was displayed. But as Lawrence Weiss, he’s also an accomplished card shark and burglar; while he was there, he stole a thumb drive from the owner’s safe. When this minor theft case becomes a double homicide, and even more, Charlie is faced with the most important and deadliest case of his life.