This is not what John expected when Mrs. Hudson asked for their help with some old boxes.
Somehow shifting a few boxes from the attic had become looking through years of photos and clothes and paraphernalia. And then there had been wine. Now they are all draped in scarves and hats, Sherlock in a particularly fetching pair of golden sandals, twirling around the sitting room to the melodious strains of ABBA's Dancing Queen. John couldn't be happier.