Season 2

01 Step Nine Episode 126th September 2013 Sherlock is called to London to revisit an old case, where he is forced to face his older brother, Mycroft. Although the siblings suffered a drastic falling-out a few years earlier, Mycroft allows Sherlock and Joan to stay in his new home, 221B Baker Street. With Joan in the middle, the brothers are forced to confront their very complicated history. 02 Solve for X Episode 23rd October 2013 When a well-respected mathematician is found dead, Holmes and Watson set out to solve a murder and the purpose of the highly guarded equation he was trying to decipher. Meanwhile, Watson is conflicted when the son of a former patient approaches her for a loan. 03 We Are Everyone Episode 310th October 2013 When Holmes and Watson set out to track down a civil contractor who leaked classified information, their lives are disrupted when they are targeted by the group of cyber-activists protecting him. Meanwhile, Joan takes the advice of a friend and signs up for an online dating service. 04 Poison Pen Episode 417th October 2013 When a financial consulting company CEO is poisoned to death, a woman from Sherlock's past who emerges as a possible suspect. 05 Ancient History Episode 524th October 2013 Holmes and Watson find themselves digging through the dark world of the mob to find a killer when they discover the body of a former assassin. Meanwhile, Watson helps a close friend track down a mystery man who swept her off her feet. 06 An Unnatural Arrangement Episode 631st October 2013 When Captain Gregson’s home is invaded, Holmes and Watson work to find the masked gunman before he strikes again. Meanwhile, Gregson gives his team some insight into his private life. 07 The Marchioness Episode 77th November 2013 Sherlock’s brother, Mycroft, arrives in New York and enlists Holmes and Watson to help solve a case involving his former fiancée. Meanwhile, Sherlock has a difficult time accepting Mycroft and Joan’s relationship. 08 Blood is Thicker Episode 814th November 2013 When a beautiful young woman is murdered, Holmes and Watson investigate her ties to a billionaire CEO. Meanwhile, Mycroft makes a case for Sherlock to move back to London. 09 On The Line Episode 921st November 2013 Holmes and Watson uncover the identity of a serial killer whose case has gone cold and find themselves butting heads with the NYPD. 10 Tremors Episode 105th December 2013 When an investigation goes horribly wrong, Sherlock must testify in an official police inquiry which jeopardizes his and Watson’s future with the NYPD 11 Internal Audit Episode 1112th December 2013 When a hedge fund manager who was also running a Ponzi scheme is murdered, Holmes and Watson must determine which of his clients is guilty. Also, Sherlock contemplates sponsoring a fellow recovering addict. 12 The Diabolical Kind Episode 122nd January 2014 Holmes and Watson come face to face with Moriarty when their one-time adversary is brought in as a consultant on a kidnapping case. Meanwhile, Detective Bell continues his struggle on the road to recovery. 13 All in the Family Episode 139th January 2014 When a body is found in a barrel, Holmes and Watson launch an investigation into the mafia’s ties to the murder. Meanwhile, Sherlock attempts to make amends with Detective Bell. 14 Dead Clade Walking Episode 1430th January 2014 Joan discovers an unsolved murder connected to a rare prehistoric fossil when she reviews one of Sherlock's cold cases; Sherlock's responsibilities as a sobriety sponsor cross personal boundaries. 15 Corpse de Ballet Episode 156th February 2014 Holmes’ latest investigation takes him inside a professional dance company when an up-and-coming ballerina is murdered. Meanwhile, Watson embarks on a solo enquiry to find a homeless veteran when his friend alleges he was abducted. 16 The One Percent Solution Episode 1627th February 2014 Tensions rise when Holmes and Watson are forced to partner with Gareth Lestrade, Sherlock’s former Scotland Yard colleague, on a bombing investigation. 17 Ears to You Episode 176th March 2014 Holmes and Watson consult on a case in which a man suspected of murdering his wife years ago receives a ransom demand for her safe return. Meanwhile, Lestrade overstays his welcome at the brownstone and seems unwilling to leave. 18 The Hound of the Cancer Cells Episode 1813th March 2014 When a famous cancer researcher is found dead, Holmes and Watson must determine if the scientist’s untimely demise was tied to his latest cutting-edge invention. Meanwhile, Bell is finally cleared to re-enter the field. 19 The Many Mouths of Aaron Colville Episode 193rd April 2014 A serial killer known for biting his victims appears to be killing again, even though he was presumed dead. 20 No Lack of Void Episode 2010th April 2014 A pickpocket dies of anthrax poisoning, putting Holmes and Watson on the trail of the toxin’s source in order to prevent more deaths. 21 The Man with the Twisted Lip Episode 2124th April 2014 When Sherlock’s brother Mycroft makes a surprise return to New York, his motivations cause discord between Sherlock and Joan. Meanwhile, a missing person case takes Sherlock and Joan inside the world of unmanned aeronautics. 22 Paint It Black Episode 221st May 2014 Business becomes personal for Sherlock when he is forced to partner with his estranged brother, Mycroft, to solve a case with life-or-death consequences. 23 Art in the Blood Episode 238th May 2014 Holmes and Watson come into contact with MI-6, the British intelligence agency, when a standard murder investigation turns out to have international and political implications. Meanwhile, in the wake of a crisis, Watson reevaluates her relationships with Sherlock and his brother, Mycroft. 24 The Grand Experiment Episode 2415th May 2014 Rising tension between Sherlock and Joan brings their partnership to a crossroads, but they endeavor to put their differences aside while they help Sherlock's brother, Mycroft, who faces accusations of treason and murder.