History Series / CSINY

* DrowningMySorrows: Flack, after Angell died. Leads to his HeroicBSOD.

* DoubleStandardRapeFemaleOnFemale: The motivation of the killer in the B-plot of 'Grand Master.' See spoiler under Body Sushi above for details.

* DontYouDarePityMe: Mac is essentially reacting this way to the aftermath of being shot. He thinks it's his problem to get through, despite people starting to notice and his friend Kevin saying he should at least tell Christine. Fortunately, he finally does, though only when she's near to leaving him.

* [[DieHardOnAnX Die Hard in a Crime Lab]]: The third season finale, 'Snow Day.'

** That same year, in "Silent Night," the outside of the first victim's house is shown decorated for Christmas. The investigators remark that it should be on a greeting card, not in crime scene photos. The ep bookends with a grandmother giving her infant granddaughter a snow globe. It's implied, but never stated, that it's her Christmas gift.

* DeadlyPrank: The victim of the exploding cigar meant for Laughing Larry in 'Child's Play.'

* DearJohnLetter: Peyton does it to Mac, though she apologizes for it later during her [[TheBusCameBack one episode return visit]].

* DeathByOriginStory: Claire Taylor, who died on 9/11/01, three years before the show began.

* DarkerAndEdgier / ShinyVsGritty: Initially, and especially compared to ''Series/CSIMiami'' (currently it's only slightly gorier than the ''Law & Orders'').

** Lindsay, with Danny at the end of 'Not What It Looks Like.' She's relived the undercover ordeal she volunteers for is over.

* {{Cyberspace}}: In 2007, 'Down the Rabbit Hole' took place half in ''VideoGame/SecondLife''.

* AlmostHoldingHands: The episode in which Lindsey tells Danny she's pregnant ends with the camera focusing on their hands, the backs of which are barely touching each other as they stand side by side watching a pair of grandparents meeting their infant grandson for the first time.

* CreepyCockroach / FriendToBugs: 'A Daze of Wine and Roaches' has a live, bejeweled Madagascar Hissing Cockroach worn as a broach ''to a restaurant.'' Also [[spoiler: one of the victims of the episode is murdered by a roach aficionado for trying to crush one.]]

* TheUnreveal: In "Clean Sweep," Mac receives a lovely flower arrangement at his office. Just as he begins to open the accompanying card, a wily female reporter who has been harassing him for an interview arrives, interrupting his progress. He tells her he can't accept the flowers; she denies sending them, saying it's not her style. Later, Lindsey point-blank asks Mac if the woman sent them. He doesn't give her a straight answer but since he kept them (knowing Mac's integrity), it probably wasn't her. The true sender is never revealed.

* CountryMouse: Averted with Lindsay. She's just as at home in the big city as she was in Montana.

* CopAndScientist: Flack works closely with either Mac, Stella, Danny, Lindsay, Jo or some combination thereof on just about every single episode.

* CoolestClubEver: A number of clubs are mentioned, including 'The Real [=McCoy=]' in season 9.

** Danny (twice - see BreakTheCutie).

* CondensationClue: In 'Unspoken,' Danny learns that [[spoiler: a would-be killer has been in Lindsay's hospital room]] when steam from his coffee allows Jo to spot smudges on the room's window.

** In episode 2.03, 'Zoo York,' on Lindsay's first day (see Welcome To the Big City below), she has to paw her way through a tiger's waste looking for evidence. Five episodes later, Mac has her [[DumpsterDive dumpster diving.]] She tells him the rookie stuff has to stop. He responds with, "Beats sifting through tiger dung."

* ContinuityOverlap: See {{Crossover}} below.

** In season 9's 'The Lady in the Lake,' while waiting to file a report in the precinct, Adam tells two little girls about his case (see Derailed Fairy Tale below).
* CheatedDeathDiedAnyway: Mac's wife (who died on 9/11) made it out of the first tower, only to be crushed by falling rubble from the second.

* CareerEndingInjury: Danny, who wanted to be a pro baseball player, but got hurt and ended up joining the police instead.

* BreastPlate: Stella often wears a rather low-cut BulletProofVest, exposing part of her cleavage--and the heart area.

* BondingThroughSharedEarbuds: "Indelible" has a touching flashback to Mac & Claire's last morning together where they share earbuds on the bus to work before he gets off at his stop.

* BloodBrothers: Stella and her foster sister. The foster sister still had some of Stella's blood in a necklace vial, which led to it getting found at a PA crime scene during the ''Series/ColdCase'' crossover episode, "Cold Reveal."

* BizarreAndImprobableBallistics: "Hostage" features a gun that fires two successive rounds so quickly and accurately that they pierce the victim through the exact same entrance wound. Played as a real thing in-universe, and may actually be a case of AluminumChristmasTrees.

* BigEater: Lindsay, who gives Danny a LongList of food to bring her in "Food for Thought," prompting him to wonder if she's pregnant again.

* BatterUp!:

* BeardOfSorrow: Danny, after it is revealed in the season 6 opener [[spoiler:that he is paralyzed from being shot in the season 5 finale.]]

* BadgesAndDogTags: Mac keeps several photos and mementos from his Marine days in his office.

* AnonymousBenefactor: Sid, who gives away much of his pillow patent fortune to the families of 10 victims whose cases had deeply touched him after discovering he is [[spoiler: most likely dying of cancer and wants to ensure it does some good.]]

* "Cold Reveal": The team investigates the death of Toby Finch, who was found dead in a church with angel wings strapped to his back after seemingly [[CameFromTheSky falling from the sky]]. Initially, Toby's friend and girlfriend are seen as suspects but further investigation reveals what really happened. Toby, [[AmbitionIsEvil obsessed with becoming internet famous]], drunkenly attempted to catapult himself off a roof, expecting his artificial angel wings to help him soar across the sky like a hang glider. To ensure this, he pre-cut the bungee cords on his safety harness, thinking that the force of the catapult would fully disconnect them. Unfortunately, they held faster than he expected, giving him such severe whiplash that his [[NeckSnap neck snapped in two places]], killing him before he even fell through the window. Mac surmises that the only crime committed was the [[IcarusAllusion victim's misdirected ambition]].

** 'The Thing about Heroes': Mac's stalker kills an engineer, then hijacks the car remotely while Stella, Flack, Sheldon and Lindsay are processing the scene. Later, he holds Mac captive in a little-known area off of one fot the tracks.

* CatchPhrase: [[LampshadeHanging Danny knows he says "Boom" a lot, and Adam knows he says "What up!" a lot.]]