Epizoda 4 (S02E04)

Saga and Martin investigate the killing of the eco-terrorists. Saga rules out suicide. They learn there must be a leader still alive out there who has been pulling the strings all along. They track him to a Copenhagen-based IT company, but he seems to have gone underground. Are new attacks being planned? Are there more terrorist cells? Martin hits it off with his Danish colleague Pernille, but is it more than just friendship? (BBC)