Hilkka (Riitta Havukainen) returns to Finland, but the race to catch the criminals continues. The interrogations of Sohanna (Alina Tomnikov) and Petter (Paavo Kinnunen) cause unexpected pressure, and eventually someone has to speak. When the background of the criminal league is finally revealed, the researchers have to once again weave a plot, in which Hilka's contribution is also needed.