Coco Carlomagno is the well-respected, if somewhat easily startled, Chief of Police in Buenos Aires. Alberta is his more sensible cousin. Together they crack the cases that confound this puzzling city. Coco's nerves are all a-jangle. Deep in a cemetary in Buenos Aires, the tomb of the famous, much-lamented tango singer Anibal Manzanahas everyone baffled. It is talking! Can they unravel this ghostly riddle?.