 De Cock and his team investigate the murder of two prostitutes. Both have fish figures carved into their abdomen, suggesting the culprit could be a crazed serial killer. Another possible culprit is a ruthless Albanian gangster. The girls  pimp, Frits Raven, is the daughter of De Cock s old friend Sanne Groot-Koerkamp. De Cock decides to retire, and Den Koninghe considers changing jobs.