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Season guide

Elementary: Season 4

24 episodes Premiered Nov 5, 2015 Updated Sep 22, 2026

Elementary Season 4 continues the overarching saga across 24 episodes as a modern-day drama about a crime-solving duo that cracks the New York Police Department's most important cases. The series stars Jonny Lee Miller and Lucy Liu in the leading roles, and is a United States television crime series created by Robert Doherty. The narrative follows the crime-solving partners as they navigate their work within the mode

Previously on Elementary

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • The series is a modern-day drama centering on a crime-solving duo cracking the New York Police Department's most important cases.
  • The show stars Jonny Lee Miller and Lucy Liu in the leading roles.
  • The television series is created by Robert Doherty.
  • The production is loosely based on figures and motifs from the Sherlock Holmes stories by Arthur Conan Doyle.

Season overview

Elementary Season 4 continues the overarching saga across 24 episodes as a modern-day drama about a crime-solving duo that cracks the New York Police Department's most important cases. The series stars Jonny Lee Miller and Lucy Liu in the leading roles, and is a United States television crime series created by Robert Doherty. The narrative follows the crime-solving partners as they navigate their work within the modern setting of New York, utilizing their unique investigative skills to handle complex cases. The season spans its full episode count while maintaining the established dynamic between the central characters and their law enforcement collaborators in the city. Across the twenty-four episodes, the overarching narrative continues the dramatic developments of the series, focusing on the investigative partnership and the procedural mystery elements that define the show's format.

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Season 4 Episodes

Episode Guide

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Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

29%
71%
Mytharc (7): Crucial lore & season climaxes
Core (17): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

The Past is Parent

Nov 5, 2015

When Holmes faces criminal charges in the aftermath of his recent violent behavior and relapse, his powerful father arrives in New York to fix his estranged son’s legal difficultie

S4·E2 Core

Evidence of Things Not Seen

Nov 12, 2015

When Morland offers to use his influence to have Sherlock and Joan reinstated as consultants to the NYPD, Sherlock’s mistrust of his father makes him question his motivation to hel

S4·E3 Core

Tag, You're Me

Nov 19, 2015

When Sherlock finds himself distracted by his father’s ongoing presence in New York City, he offers to help Morland resolve a work issue in exchange for his prompt departure home.

S4·E4 Core

All My Exes Live in Essex

Nov 26, 2015

When Holmes and Watson investigate the murder of a fertility lab technician, they discover the woman had a secret personal life that leads them to multiple suspects. Also, the tabl

S4·E5 Mytharc

The Games Underfoot

Dec 10, 2015

When an archeologist is murdered, Holmes and Watson believe the man may have been killed for what he discovered during his last excavation in a local landfill. Also, Sherlock’s rel

S4·E6 Core

The Cost of Doing Business

Dec 17, 2015

Morland offers to act as one of his son’s “Irregular” consultants so that he can lend Sherlock and Joan his considerable resources to help them solve a case.

S4·E7 Core

Miss Taken

Jan 7, 2016

When Watson’s stepfather writes a crime novel based on her work with Holmes without her knowledge, an underlying issue in their relationship is revealed. Also, as Holmes and Watso

S4·E8 Mytharc

A Burden of Blood

Jan 14, 2016

Holmes and Watson investigate a homicide in which the victim was murdered in a manner reminiscent of the crimes of an infamous, and already incarcerated, serial killer. Also, Sherl

S4·E9 Core

Murder Ex Machina

Jan 21, 2016

Holmes and Watson search for a computer hacker responsible for three murders, including the death of a Russian billionaire who was visiting New York City. Also, Joan is surprised t

S4·E10 Core

Alma Matters

Jan 28, 2016

Holmes’ tentative reconciliation with his father suffers a setback when Holmes and Watson discover Morland has been keeping a secret that threatens all of their safety. Also, Holme

S4·E11 Core

Down Where the Dead Delight

Feb 4, 2016

Holmes and Watson must search for a killer without any physical evidence to aid them after a bomb is detonated in the New York City morgue. Also, Watson is suspicious when an NYPD

S4·E12 Core

A View With a Room

Feb 11, 2016

Captain Gregson’s colleague from Narcotics asks Holmes to orchestrate the perfect heist inside the heavily armed and virtually impenetrable compound of a drug-dealing biker gang. A

S4·E13 Core

A Study in Charlotte

Feb 18, 2016

Sherlock and Joan search for a murderer who used poisonous mushrooms to kill a botany professor and a group of the instructor’s students. Also, when Joan is disturbed by loud noise

S4·E14 Mytharc

Who Is That Masked Man?

Feb 25, 2016

When Holmes’ investigation into the attempt on Morland’s life pushes their strained relationship to the breaking point, the identity of Sherlock’s mother is revealed. Also, when th

S4·E15 Core

Up to Heaven and Down to Hell

Mar 3, 2016

When Watson runs into Captain Gregson and his secret girlfriend, a former NYPD officer, she inadvertently sets the couple’s breakup in motion. Also, Holmes and Watson investigate t

S4·E16 Core

Hounded

Mar 10, 2016

At the urging of Morland’s wealthy associate, Henry Baskerville, Holmes and Watson look into the death of his brother and discover that a witness saw the man chased to his death by

S4·E17 Mytharc

You've Got Me, Who's Got You?

Mar 20, 2016

After a vigilante dressed up as a comic book hero is murdered, Holmes and Watson need to find the man's true identity and find his killer.

S4·E18 Core

Ready or Not

Mar 27, 2016

When a survivalist doctor goes missing, Holmes and Watson must determine whether he’s purposely gone off the grid or if he’s a victim of foul play. Holmes exhibits odd behavior whe

S4·E19 Core

All In

Apr 10, 2016

A mysterious woman who organizes illegal, high-stakes poker games arrives on Holmes and Watson’s doorstep and tells them her life is in danger claiming to be a former associate of

S4·E20 Core

Art Imitates Art

Apr 10, 2016

As Holmes and Watson investigate a woman’s murder, they discover her death is linked to a piece of artwork that has ties to a crime that was committed when she was in college. Also

S4·E21 Core

Ain't Nothing Like the Real Thing

Apr 17, 2016

When Holmes and Watson are pulled into a double-homicide investigation, they discover the victims were staging a fake murder right at the moment they were killed. Also, Watson's in

S4·E22 Core

Turn It Upside Down

Apr 24, 2016

Sherlock’s father, Morland, becomes Sherlock and Joan’s prime suspect in a murder investigation after one of his employees is killed under the guise of a robbery.

S4·E23 Mytharc

The Invisible Hand

May 1, 2016

When Holmes and Watson discover the perpetrator behind the attempt made on Morland’s life, they find a shocking connection to themselves.

S4·E24 Mytharc

A Difference in Kind

May 8, 2016

Holmes and Watson’s lives are threatened by an influential, worldwide criminal network connected to the murder attempt on Morland Holmes. Also, Sherlock’s grievances with his fathe