"Oh, Mrs. Turner, thanks so much for having me over." Mrs. Hudson settled herself onto her neighbour's chesterfield, picking absently at one of the hideous crocheted antimacassars draped over the back. "I just had to get out of there. The boys upstairs have been going at it for hours."

Mrs. Turner coughed. "I didn't think yours were... well, you know. The nice doctor one keeps insisting they're just friends, colleagues, whatever."

Blushing, poor Mrs. Hudson put her teacup down with a rattle. "Oh no, no, not like that. They've been arguing about something. Started out as bickering and it's turned into an all-out shouting match. Something to do with kidneys, I think. Best if I just don't ask."

The other landlady nodded. It was nice to have someone to commiserate with when it came to difficult tenants. "Mine have been arguing a fair bit too lately. Just little domestic issues though. Can't imagine either of them have anything to do with kidneys. Eugh." She shuddered delicately, but Mrs. Hudson just chuckled and studied her teacup.

"I don't mind the experiments. They're good boys, usually. Honestly though, I do wish they'd just get on with it and put their efforts into doing something more productive with each other. They're so oblivious. All that unresolved tension between them is driving me absolutely batty!"