Elementary

Holmes returns to New York with a new apprentice and a renewed interest in working with the NYPD after being fired by London's MI6. Gina Gershon and Ophelia Lovibond guest star.

When Holmes and Watson join forces on a double homicide, Sherlock's new apprentice, Kitty, threatens the investigation when she allows her jealousy of Sherlock and Joan's work rapport to override her better judgment.

Sherlock helps a math genius from his network of "Irregulars" experts after he stumbles upon a body while participating in a math puzzle competition.NFL legend Phil Simms guest stars.

When a groundbreaking artificial intelligence software program is stolen, Sherlock agrees to take on the case, but enlists Joan's assistance in solving it when he becomes more interested in disproving the computer's abilities than finding the thief.

Sherlock and Kitty investigate the murder of a small postal store owner whose death is connected to the illegal diamond trade.

Holmes and Watson search for a thief who committed murder to steal a rare map. Mamie Gummer guest stars.

A bored Sherlock forces his investigative services onto Joan, who is trying to locate a woman who has been missing for five years, and the only clue is the smell of nutmeg at the site of her disappearance.

Holmes and Watson join forces with the NYPD after a police officer is murdered. Also, Sherlock searches for the creator of a "recovery blog" who is posting personal statements he has made in sobriety meetings.

When a nurse Watson used to work with asks for her help finding their missing acquaintance, the woman's trail leads Watson and Holmes to another person who has disappeared.

While Kitty tries to find a runaway teen, Sherlock and Joan work a case in which the murder of a brilliant bioengineer looks to be at the hands of a drug cartel.

In the first episode of a two-part event, Watson begins her new job as an in-house investigator for an insurance firm. Stuart Townsend guest stars.

As Kitty begins to unravel due to the imminent threat to her safety, Sherlock and Joan intensify their efforts to help her. Stuart Townsend guest stars.

When a debt collector is murdered, Holmes and Watson attempt to narrow down a suspect pool of thousands of consumers who owed the man money.

An unexpected event brings Watson into contact again with Elana March, the crime boss she brought to justice. Series star Lucy Liu directed the episode. Gina Gershon guest stars.

Holmes and Watson follow a blood trail into the world of wrongful death compensation when they investigate a series of murders in which the killer leaves envelopes of cash on the victims. Alicia Witt guest stars.

When Holmes is implicated in the murder of a woman who was killed during the height of his addiction, he investigates himself to find their connection.

Holmes and Watson investigate a murder that initially looks like a road rage incident, but takes a new direction when they learn the victim was flash-frozen at the time of death.

When a driver for a ridesharing company is intentionally run over by a city cab, Holmes and Watson wonder if it's a case of professional jealousy. Anastasia Griffith guest stars.

Holmes and Watson find themselves in the middle of a civil war being fought on the Internet when a member of Everyone, the anonymous hacker group they periodically work with, is murdered.

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living.

When two New York City paramedics are killed during a kidnapping, Holmes and Watson join the manhunt to find the murderer and the woman he abducted. Ato Essandoh guest stars.

When a judge is murdered, Holmes and Watson become involved in the interstate search to find the prime suspect, an escaped convict from a privatized prison.

Holmes and Watson look into the death of a member of Holmes' online beekeeping community who was a researcher looking into a deadly Northeast honey bee outbreak. Sutton Foster guest stars.

When Holmes' former recovery sponsor and friend, Alfredo (Ato Essandoh), disappears, Holmes and Watson retrace his steps as Captain Gregson and Detective Bell lend NYPD's resources to help find him.