Daadh is invited up to Uppsala by his old professor, who needs his help to find out who poisoned one of his students. Daadh involves himself in the case and quickly realises that his own life is in danger. Someone clearly doesn't like him snooping around. Meanwhile, subversive events take place at the home of chief constable back in Stockholm that will affect Daadh's future. And furthermore, his old enemy Marta Raxelius has decided to put her planned revenge into action but rather than striking at Daadh, the blow lands on someone else altogether.
