It is spring in Florence and everyone around Marshal Guarnaccia seems to be in love, even his own son. The case he is working on, the murder of a young woman, seems to present no particular problems. No distressed parents, no political or influential connections, no pressure from the media. The investigation takes him only a few steps from home, to the Boboli gardens and to the artisans' quarter - where he knows everybody and everybody knows him. The locals also trust him - until he seems to be accusing one of them...