John Watson And The Bloody Wine Glasses

Sherlock begins to act strangely around John. He was nowhere to be seen for two and a half weeks and suddenly came back as if he hadn't been gone and nothing had happened, but John figured out that something was definitely off.
Greg was obviously in on the secret.
John had to make deductions of his own; he needed to solve a case.
He just needed time to figure out what it was.

This isn't a very good fic, just something to write when I'm bored.
Most chapter are very short, others a little longer.