BBC One crime drama has resumed with coronavirus protocols and within government guidelines. The official Instagram account shared a photo of Cillian Murphy on set wearing a patterned face mask.One fan replied: "IS IT TIME? FINALLY" while another said: "2021 is saved".But realising the season will be its last, thousands on Twitter shared crying emojis in response to an official fan page sharing the news.One upset fan posted: "Well of course it is.