9. You Do It to Yourself

Complete story — includes the ending

An under-the-weather Sherlock investigates the murder of a college professor who was shot in both eyes. Sherlock retraces the victim's steps back to the illicit gambling parlor in Chinatown where he was killed. Gregson is able to bring in the gunman thanks to video surveillance footage, but the killer claims that he was anonymously hired to kill the professor. Evidence points to the professor's teaching assistant, but Sherlock and Joan hypothesize that the victim himself hired his own executioner. It turns out the professor had an agonizingly painful, untreatable cancer and had only a few months to live; his condition could have been detected by the appearance of his eyes. The professor had lured a Chinese woman to the United States, promising to marry her, but instead abused her physically and psychologically. The killer, by changing the location of the killing, messed up the victim's plan to frame her lover (his teaching assistant) for the murder. Meanwhile, Joan gets a call from an addict and former lover who is in prison and needs her help.