A murder investigation brings together two unlikely allies in a race to uncover a shadowy international conspiracy. Professor Hans Rekke: born into a wealthy Stockholm family, world authority on interrogation techniques, capable of vertiginous feats of logic and observation.Micaela Vargas: community police officer, born to Chilean political refugees in a tough suburb, with two brothers on the shady side of the law. The launch of a new series inspired by Sherlock Holmes.