"In fact," says Mr. Phelps, "as happens in about half my classes, someone - welcome back, Miss Swan, Miss Stark - was able to identify what happened, although I don't know how much of a part the subsequent outburst played in providing clues. Nicely done, Miss Stark - can you lead us through your thought process as you came to realize what I'd done?" Mr. Phelps asks Sherlock.