Elementary

As Holmes confronts a medical diagnosis that threatens both his career and sobriety, he meets Michael (Desmond Harrington), a man who credits Sherlock for helping him conquer his own addiction.

Watson and her half sister, Lin (Samantha Quan), have conflicting reactions when their estranged biological father dies.

Holmes and Watson enter the world of rare antiquities when they investigate a case in which victim was killed during a Revolutionary War reenactment.

Watson considers making a major life change after reading her own therapy file while Holmes and she investigate the murder of her former psychologist.

Holmes and Watson retrace Holmes' steps after he finds himself in possession of a severed head and no memory of the past six hours or why he has it.

Holmes and Watson enter the world of nuclear security when they investigate the murder of an ex-Yakuza gang member. Also, Captain Gregson is blindsided by a stunning personal confession from his daughter, Hannah (Liza J. Bennett), a police sergeant.

Holmes and Watson find themselves on the hunt for a serial killer after a murder rocks their inner circle. Also, Holmes' neurological recovery regresses and his sobriety wavers as his commitment to catching the killer grows into an obsession.

Holmes and Watson's search for the killer of a woman found encased in cement takes them inside the clean technology industry. Also, Watson takes a giant leap forward regarding her interest in adoption.

Holmes' former sobriety sponsor, Alfredo (Ato Essandoh), asks for his help with an illegal endeavor in order to save his brother.

Sherlock and his father, Morland Holmes (John Noble), attempt to repair their strained relationship upon learning of a death within their family.

Holmes engages an old foe to protect his father after he learns Morland (John Noble) is in danger of being killed.

Detective Bell considers leaving the NYPD when he is recommended for a once-in-a-lifetime career opportunity.

Holmes and Watson investigate the poisoning of a relocation expert and discover the man led a decades-long secret career as a contract killer before his death.

Holmes and Watson race to help Detective Bell when he becomes a victim of a bio-terrorism attack at the precinct and the station is quarantined. Captain Gregson and Detective Bell begin to suspect they are trapped inside with the perpetrator.

Holmes and Watson's investigation into the murder of a religion professor puts them on the hunt for a killer connected to the occult.

Holmes and Watson discover that the murder of a robotics engineer may be connected to his groundbreaking secret research in the area of real-life teleportation.

Holmes and Watson investigate multiple motives for murder when a zoologist is killed because of his numerous love affairs or his trailblazing research. Also, Holmes finds himself the victim of identity theft after his medical records are stolen.

Holmes and Watson search for a killer choosing victims based on the predictions of a deceased man who claimed to foresee the future deaths of others, including the murder of Sherlock Holmes.

Holmes and Watson race to locate a missing woman when Harlan Emple (Rich Sommer), Holmes' friend and "Irregulars" mathematics expert, becomes the prime suspect in her disappearance.

Holmes and Watson's deadly conflict with Sherlock's former friend Michael (Desmond Harrington) intensifies when their newest victim looks to be the serial killer's latest prey, in the first part of a two-episode season finale.

Holmes and Watson face their greatest challenge to date when a murder investigation threatens to destroy their partnership, in the conclusion of a two-episode sixth season finale event.