[The doctor fights back the urge to roll his eyes at the mention of Sherlock. Just once he would like be regarded as a person and not just an extension of the detective. He is 500% done with today.]
Thing about the term flat-share; it usually implies more than one person.
[The hostility in John has yet to die completely, would take a moment to die down even if he wanted it to; there are still too many possibilities. This person doesn't necessarily look dangerous... more than being responsible for Sherlock injuries, it seems more likely they just heard of the detective's hospitalization and decided to make themselves comfortable in an abandoned flat. Either way, John is trying to stay civil.]
[Action]
Thing about the term flat-share; it usually implies more than one person.
[The hostility in John has yet to die completely, would take a moment to die down even if he wanted it to; there are still too many possibilities. This person doesn't necessarily look dangerous... more than being responsible for Sherlock injuries, it seems more likely they just heard of the detective's hospitalization and decided to make themselves comfortable in an abandoned flat. Either way, John is trying to stay civil.]
D'you want me to get the deed from Mrs. Hudson?