 Complete the following phrase:  On its first broadcast on BBC One, the episode received 11.37 million viewers, a 32.1 audience share. Although this was a drop from The Sign of Three and The Empty Hearse, it became the most tweeted-about single episode of a drama series in the UK. The episode received critical acclaim, and Mikkelsens performance as Magnussen, in particular, was praised. For their performances in the episode, Cumberbatch and Freeman both won the 