While recovering from his gun shot wounds, Holmes eschews painkillers while working on a case of a Greek shipping magnate – involving an assassination and currency manipulation – before his final showdown with Moriarty., Sherlock and Joan conclude their breakout first season by hunting down Moriarty, but the criminal mastermind has surprises in store for the sleuth., Conclusion. The first season ends with Holmes dealing with the sudden reappearance of his former lover, Irene Adler, and recalling the events that led to his drug addiction. Meanwhile, Moriarty pursues Sherlock and Joan., Conclusion. The first series ends with Holmes dealing with the sudden reappearance of his former lover, Irene Adler, and recalling the events that led to his drug addiction. Meanwhile, Moriarty pursues Sherlock and Joan.