I’M BECOMING AN EVER MORE loyal devotee of Walter Presents, the sub-channel on Channel Four devoted to European crime and thrillers. Walter curates a kaleidoscopic showcase of topical dramas in vivid settings. In the first season of Arctic Circle, Nina Kautsalo, a Finnish detective, finds a dying Russian prostitute in the wilds of Lapland. But when a deadly virus is found in her blood a much wider threat soon manifests.
Season two, tighter at six rather than ten episodes, continues the theme of cross-border crime and Finnish-Russian police cooperation (or lack of it). A clique
