From Madam'zelleGiry:
Day 12: The Lion, the Witch, and the Wardrobe.

"A most unusual case, Watson. Four children seem to have disappeared inside a wardrobe-"

"A wardrobe? How could they possibly have managed that?"

"I can only assume it was bigger on the inside. As I was saying, they seem to have disappeared inside a wardrobe, and the owner of the wardrobe wishes for me to find them, and retrieve them from the wardrobe."

"Well? Will you take the case?"

"I am afraid I am far too busy at the moment to take such a case. Besides, I'm sure they will be found before long. If they are not found within the next twenty four hours, then I may look into the matter."

"Very well, Holmes. If you are not going to be taking the case, perhaps you will have time to dine with me at Simpsons?"