ILL
They are sitting in a train, bound for home. It has been a successful case and, as usual, Holmes is sunk in though and Watson is looking out of the window.
It is the cough that alerts him.
A soft cough which Dr. Watson utters floats in the air, and then dies away. It is followed by a few more and Holmes looks sharply at his friend.
Watson smiles at him. "Something was stuck in my throat."
Holmes nods and then returns to his brooding.
A dozen more coughs break the silence.
Holmes looks up in time to see Watson cover another cough. His cheeks are flushed and perspiration stands out on his forehead.
Holmes leaps to his feet and puts his hand on Watson's forehead.
"I'm alright, Holmes. Really."
"No" says Holmes hoarsely and paling a little "No, you're not."