"The bad beard was the clue, Watson!"
"What do you mean, Holmes?"
"No woman would permit a man to wear it. He was lonely and frustrated. I deduced that the massage parlours were for him the location of his desire, but his morality made the ladies who worked there wicked temptresses. Violence was the result of irreconcilable forces in contest within him. Religion versus biology. Solving the case was elementary, my dear Watson."
"Oh, Holmes. You and your elementary! So corny."