Holmes and Watson are called in to consult when a woman, who was thought murdered by her husband years ago, appears now to be a victim of a kidnapping after her husband receives a ransom demand. Holmes and Watson are eager for Lestrade to leave the brownstone but he doesn't seem inclined to do so.moreless
Boyd and the Crowes struggle to get four dead bodies across the border in order to keep an important business relationship.
Raylan goes hunting for Danny Crowe after Alison is forced off the road. Boyd make sure this time that Ava is safe.
Raylan tries his best to get the Crowes out of Harlan which may be trickier than he thought.
As Watson peruses one of Holme's cold cases, she figures out that a rare prehistoric fossil is tied to the unsolved murder. Sherlock is in uncharted territories as concerns his duties as a sobriety sponsor.moreless
Dewey receives orders to kill Wade Messer and Boyd visits Johnny to question him on his betrayal.
Raylan takes over a mansion once run by a mob accountant.
Boyd does his best to get Ava out of jail and Raylan helps out an old pal.
While Holmes tries to make amends with Detective Bell, he and Watson look into the mafia's association with a body found in a barrel.
Boyd targets the vulnerable Detroit mob, and Raylen gets involved with Crowe family members in Florida.
Moriarty is brought in to consult on a kidnapping case, bringing Holmes and Watson face to face with their former adversary. Detective Bell persists in his efforts to make a full recovery.
Holmes and Watson set out to determine which client killed a hedge fund manager running a Ponzi scheme. Sherlock considers becoming a sponsor for a recovering addict.
An official police inquiry into one of Sherlock's investigations puts his and Watson's future with the NYPD on the line.
It's the NYPD versus Holmes and Watson when the two sleuths uncover a cold case serial killer.
Homes and Watson get a look into Captain Gregson's private life when they investigate after masked men invade the Captain's home.
As Holmes and Watson investigate the murder of a financial consulting company's CEO, a mysterious woman from Holmes' past surfaces as a suspect.
Watson and Holmes search for the civil contractor responsible for leaking classified information but soon find themselves targeted by cyber activists. Joan decides to sign up at an online dating service.
Holmes and Watson investigate the murder of a well-respected mathematician and look into the guarded equation he was trying to decipher. Watson is at a loss when a former patient's son asks her for a loan.moreless
Dr. William Masters starts a secret study of human sexuality. We also see him run his medical practice, at a midwestern teaching hospital in St. Louis, as an OB/GYN by day while he works on his project by night. A new secretary, Virginia Johnson, shows promising relevance to his studies.moreless
Holmes and Watson head to London for an unsolved mystery investigation and to look up his former mentor, Gareth Lestrade. Sherlock joins up with his estranged brother, Mycroft, who discloses some secrets.
Flashbacks reveal what led to Sherlock's downfall into addiction as the re-emergence of Irene Adler leaves Sherlock stunned.
A man claiming to be Moriarty hires Holmes to solve a murder. Watson is being pushed by Gregson to go back to being a sober companion rather than pursuit dangerous exploits with Holmes.