Thomas "Tommy" Gregson is a NYPD Captain of the 11th precinct. He previously worked at Scotland Yard which is 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 Tommy currently lives and works as Captain of the New York Police Department, he hires him as a consultant detective.[2]

He was married to Cheryl Gregson, and has several adult daughters.[3][4] One of them is named Hannah and she works as a police officer at the same precinct as her father and wishes to become a captain like him (Rip Off).

Season oneEdit

When Sherlock is kidnapped, Joan becomes worried when he doesn't answer her messages. Suspecting that he may have relapsed, she tells Tommy that she's a sober companion for recovering drug addicts, and that Sherlock is her client. After Sherlock is found, Tommy 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.[5]

Season twoEdit

It is revealed after a break-in in his house that he and his wife are on a trial separation. Cheryl is tired of Tommy's job being prioritized over her, but Tommy 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.[4]

Season threeEdit

Tommy 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. Tommy 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. Tommy eventually agrees to shake the officer's hand in front of the precinct. The officer tells Tommy he is quitting the force and seems scared, Tommy then realizes that Kitty intimated the officer[6].

Tommy's daughter 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. Tommy learns of the situation and advises Joan not help Hannah again.[7]

Tommy 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.[8]

Season fourEdit

Tommy has a new girlfriend Paige, a former police officer, that 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. Tommy wants to be with Paige, even with her health issues. Tommy convinces Paige to resume their relationship.[9]

Season fiveEdit

As a favor to Tommy'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 Tommy marry Paige so that she may be covered under his insurance, Tommy admits that he loves Paige and wants to marry her, but she isn't keen to do so. Sherlock arranges a meeting between Tommy and Paige after speaking to her about marriage. Apparently he got her to “lower her defenses” and then told Tommy they should get married because Tommy said he wanted it. Sherlock even provided a selection of rings.[10]

In "Henny Penny the Sky Is Falling" the city wishes to recognize the Major Crimes division, and Tommy wants Joan and Sherlock included in the commendation. Sherlock is against this and tries to sabotage Tommy's efforts with his higher ups, while Joan tries to encourage the recommendation. Joan eventually convinces Sherlock to accept the honor.[11]


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 treeEdit

Tommy Gregson
Cheryl Gregson
Hannah Gregson
Several daughters


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

See alsoEdit

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.
  2. "Pilot," aired September 27, 2012. Elementary, Season 1, Episode 1. CBS. Directed by Michael Cuesta, written by Robert Doherty.
  3. "Dead Man's Switch," aired April 25, 2013. Elementary, Season 1, Episode 20. CBS. Directed by Larry Teng, story by Christopher Silber, teleplay by Liz Friedman and Christopher Silber.
  4. 4.0 4.1 "An Unnatural Arrangement," aired October 31, 2013. Elementary, Season 2, Episode 6. CBS. Directed by Christine Moore, written by Cathryn Humphris.
  5. "Rat Race," aired October 25, 2012. Elementary, Season 1, Episode 4. CBS. Directed by Rosemary Rodriguez, written by Craig Sweeny.