In Elementary Season 1, Episode 11 ("Dirty Laundry"), Sherlock and Joan investigate a hotel manager's murder, discovering a deep-cover Russian spy plot. The episode highlights themes of treason, the grooming of a second-generation agent, and the evolution of Sherlock and Joan's professional partnership. Academic topics include exploring the psychology of trauma in espionage, the ethics of "illegal" sleeper programs, and the modernization of the Holmes-Watson dynamic. Watch the episode on Hulu or Paramount+ . Dirty Laundry | Elementary Wiki | Fandom