Who is Francisco Montenegro from A Savage Place: A Spenser Novel and what is their importance?

Francisco Montenegro, or Franco, is a mob enforcer. Franco is blackmailing Felton and Mickey sees a payoff between Franco and Felton, which begins Candy's investigation into the movie industry. Franco learns that Candy is investigating the movie industry and kidnaps her, beating her, hoping to scare her off the story. However, Candy only becomes more determined to investigate the story. Later, Franco follows Candy and Spenser through town after they interview Hammond. Spenser is able to scare Franco and his hired partner off that time. Later when Spenser and Candy show up at Felton's house, Franco arrives and a gun fight erupts. Spenser kills Franco's partner but is unable to stop Franco from taking off with Felton. Later, Felton is found murdered. Franco killed Felton to keep him from telling the mob that he has been stealing money from Hammond's payoffs. Franco is running from the mob after Felton's death, so he blackmails Brewster. Rather than be blackmailed, Brewster kills Franco and Candy in a remote oil field.