Thomas "Tommy" Gregson is the Captain of the NYPD 11th Precinct. He previously worked at Scotland Yard which where he met Sherlock Holmes.



Tommy Gregson started working for the NYPD thirty years ago.[1] He was assigned to Scotland Yard a few months after the September 11 attacks to observe their counter-terrorism bureau. Although Sherlock was mostly assigned to homicides, their paths still crossed a few times. Ten years later, when Sherlock moves to New York City where Gregson currently lives and works as Captain of the New York Police Department, he hires him as a consultant detective. ("Pilot")

He was married to Cheryl Gregson, and has several adult daughters. ("An Unnatural Arrangement") One of them is named Hannah and she works as a police officer at the 12th Precinct and wishes to become a captain like him. ("Rip Off")

Season One

When Sherlock is kidnapped, Joan becomes worried when he doesn't answer her messages. Suspecting that he may have relapsed, she tells Gregson that she's a sober companion for recovering drug addicts, and that Sherlock is her client. After Sherlock is found, Gregson tells him that he knew he was in rehabilitation before he hired him to work for the NYPD, and that since his services as a consulting detective hasn't altered, he doesn't see a problem with it. ("Rat Race")

Season Two

It is revealed after a break-in in his house that he and his wife are on a trial separation. Cheryl is tired of Gregson's job being prioritized over her, but Gregson thinks the trial separation is just a break for Cheryl and that she'll come back. After realizing why his wife wanted a separation, he lets her know that she deserves better and that he is going to use the separation to figure out how to give it to her. ("An Unnatural Arrangement")

011 An Unnatural Arrangement episode still of Cheryl and Tommy Gregson
I'm not living here at the moment.

Season Three

Gregson physically assaults his daughter’s partner after learning he was abusive with her in the context of a romantic relationship. His daughter, Hannah, is not pleased with way he handled the situation, feeling he has caused talk among her fellow officers. Gregson discusses the situation with Kitty Winter and she helps him understand his daughter’s position, and her desire to keep from appearing as a victim to her colleagues. Gregson eventually agrees to shake the officer's hand in front of the precinct. The officer tells Gregson he is quitting the force and seems scared, Gregson then realizes that Kitty intimated the officer. ("Rip Off")

Hannah asks for Joan's assistance with a case involving a string of robberies. Joan pieces the case together and gives Hannah the information to take to the lead detective. She then discovers that Hannah has chosen to act on the information herself to win a commendation and advance her career as opposed to following proper procedure. Gregson learns of the situation and advises Joan not help Hannah again. ("A Stitch in Time") Gregson gets a chance for a promotion. He considers it, even getting Joan to investigate his possible successors, however he ultimately decides he is happy with his current position. ("Absconded")

Season Four

Gregson's new girlfriend Paige Cowan, is a former police officer who was forced to resign. When Joan runs into them at a coffee shop she inadvertently triggers their break-up, Paige had wanted to keep their relationship a secret from Tommy's work colleagues. It is later revealed that the larger reason Paige broke things off was because she was recently diagnosed with Multiple Sclerosis. Gregson wants to be with Paige, even with her health issues. Gregson convinces Paige to resume their relationship. ("Up to Heaven and Down to Hell")

Season Five

As a favor to Gregson's girlfriend Paige, Sherlock investigates her doctor's staff, and finds evidence of wrong doing. However, in doing so he uncovers that Paige is having financial difficulties. Sherlock suggests that Gregson marry Paige so that she may be covered under his insurance, Gregson admits that he loves Paige and wants to marry her, but she isn't keen to do so. Sherlock arranges a meeting between Gregson and Paige after speaking to her about marriage. Apparently Sherlock managed to lower her defenses and then told Gregson they should get married because Gregson said he wanted it. Sherlock even provided a selection of rings. ("Render, and Then Seize Her")

S05E03-Gregson proposes to Paige
Gregson proposes.
When the city wishes to recognize the Major Crimes division, Gregson wants Joan and Sherlock included in the commendation. Sherlock is against this and tries to sabotage Gregson's efforts with his higher ups, while Joan tries to encourage the recommendation. Joan eventually convinces Sherlock to accept the honor. ("Henny Penny the Sky Is Falling")

S05E04-Gregson uniform
You guys are what keeps me going.


Season one appearances
Pilot While You Were Sleeping Child Predator Rat Race
Lesser Evils Flight Risk One Way to Get Off The Long Fuse
You Do It to Yourself The Leviathan Dirty Laundry M.
The Red Team The Deductionist A Giant Gun, Filled with Drugs Details
Possibility Two Déjà Vu All Over Again Snow Angels Dead Man's Switch
A Landmark Story Risk Management The Woman Heroine
Season two appearances
Step Nine Solve for X We Are Everyone Poison Pen
Ancient History An Unnatural Arrangement The Marchioness Blood Is Thicker
On the Line Tremors Internal Audit The Diabolical Kind
All in the Family Dead Clade Walking Corpse de Ballet The One Percent Solution
Ears to You The Hound Of Cancer Cells The Many Mouths of Aaron Colville No Lack of Void
The Man With the Twisted Lip Paint It Black Art in the Blood The Grand Experiment
Season three appearances
Enough Nemesis To Go Around The Five Orange Pipz Just a Regular Irregular Bella
Rip Off Terra Pericolosa The Adventure of the Nutmeg Concoction End of Watch
The Eternity Injection Seed Money The Illustrious Client The One That Got Away
Hemlock The Female of the Species When Your Number's Up For All You Know
T-Bone and the Iceman The View From Olympus One Watson, One Holmes A Stitch in Time
Under My Skin The Best Way Out Is Always Through Absconded A Controlled Descent
Season four appearances
The Past Is Parent Evidence of Things Not Seen Tag, You're Me All My Exes Live in Essex
The Games Underfoot The Cost of Doing Business Miss Taken A Burden of Blood
Murder Ex Machina Alma Matters Down Where the Dead Delight A View with a Room
A Study in Charlotte Who Is That Masked Man? Up to Heaven and Down to Hell Hounded
You've Got Me, Who's Got You? Ready or Not All In Art Imitates Art
Ain't Nothing Like the Real Thing Turn It Upside Down The Invisible Hand A Difference in Kind
Season five appearances
Folie a Deux Worth Several Cities Render, and Then Seize Her Henny Penny the Sky Is Falling
To Catch a Predator Predator Ill Tidings Bang Bang Shoot Chute How the Sausage Is Made
It Serves You Right to Suffer Pick Your Poison Be My Guest Crowned Clown, Downtown Brown
Over a Barrel Rekt in Real Life Wrong Side of the Road Fidelity
The Ballad of Lady Frances Dead Man's Tale High Heat The Art of Sleights and Deception
Fly Into a Rage, Make a Bad Landing Moving Targets Scrambled Hurt Me, Hurt You

Family tree

Tommy Gregson
Cheryl Gregson
Hannah Gregson
Several daughters


Every photo of Tommy Gregson on this wiki can be seen here.

See also

Arthur Conan Doyle's Inspector Gregson on Wikipedia, which Elementary's Tommy Gregson is based on.


  1. "Quinn's mighty detective". Retrieved April 24, 2013.
Elementary intertitle Elementary Characters
Main Characters
Sherlock HolmesJoan WatsonCaptain Thomas GregsonDetective Marcus Bell
Recurring Characters
AlistairAthena and MinervaJonathan BloomRoy BookerAgent BurkeClydeGina CortesFrank Da SilvaDuaneEveryoneAgent GephardtDr. GrannisChristopher GrayDel GrunerHalconEmily HankinsDr. Eugene HawesFiona HelbronWilliam HullShinwell JohnsonEmil KurtzGareth LestradeAlfredo LlamosaMarchefElana MarchDean McNallyChantal MilnerAndrew MittalSanthosh MittalSebastian MoranJamie MoriartyAgent MullerRandyOscar RankinCandace ReedMichael RowanTim SherringtonTall BoyJoshua ViknerSir James WalterAgent WhitlockTyus WilcoxKitty Winter
The Irregulars
Mr. BriggsC.Harland EmpleGayMs. HudsonLucMasonThe NosePhil SimmsAgatha SpurrellTeddy
Paige CowanHannah GregsonMay HolmesMorland HolmesMycroft HolmesEstella LlamosaHenry WatsonMary WatsonOren WatsonLin Wen
Minor Characters
CassieLucas BundschHoward EnnisMistress FeliciaZoya HashemiRuslan KrasnovGwen and Olivia LynchNigella MasonTy MorstanRemusRomulusJennifer SaylesShauna ScottHenry Watson