Owen worries about losing his hair from his treatments.
Tropes featured in the episode:
- Awesome by Analysis: During the first call, Paul is able to figure out who and how the office workers were poisoned within minutes, just by observing the area they were all sitting at and inspecting their lunches.
- Blunt "No": When Ellen points at Judd inquiringly to help her, he gives her this.
- Camp Gay: Invoked by T.K. when Ellen asks him for CPR.
- Catapult Nightmare: What Owen does after he has a night terror about losing his hair.
- Celebrity Paradox: Michelle, played by Liv Tyler, admits that she likes the bald look on men, citing Bruce Willis as an example. Willis and Tyler played father and daughter in Armageddon (1998).
- Conspiracy Theorist: During the third call, the 126 team has to deal with a Conspiracy Theorist that doesn’t want to leave his apartment, as he thinks the team is there to lure him outside to be killed. Owen decides to play into his delusion in order to get him safely out, and the whole team plays along.
- Crowd Panic: During the first call, when several poisoned office workers attempt to throw themselves out of a broken window, the whole room - other workers and the emergency services - freak out, not knowing what was causing the suicide attempts.
- Disproportionate Retribution: The first call involves the mercury poisoning of a room full of office workers that causes multiple people to go crazy and fatally harm themselves, which is the revenge of their food delivery person, all because they never tipped him and according to him, they acted like he was invisible when he brought them their orders.
- Explosion Propulsion: During the third call, the 126 team is hit with the blastwave when the building explodes.
- Five-Second Foreshadowing: During the second call, Ellen shakes the hands of every male member of the 126 team but snubs Marjan and Mateo. She also uses the term “these people”, and talks about her Hispanic neighbors who called in the fire department "not respecting our country's laws". Right after that, the neighbors explain that Ellen has a history of making nuisance 9-1-1 calls against them, including the current call-out concerning their barbecue.
- From Nobody to Nightmare: The courier invokes this trope as his reasoning for spiking the office workers’ foods with mercury.
- I Take Offense to That Last One: During the second call, the one that called the fire department is more concerned about being called old than a racist.Hector: She may look like a sweet old lady, but she's an evil racist.Ellen: Who’re you calling old?Hector: Really? That's the part that upset you?
- Making Love in All the Wrong Places: Carlos and T.K. have sex in Carlos’ lounge room. They also keep going at it on the rug after they roll off the couch.
- Mistaken for Suicidal: During the first call, the office worker is thought to be this. Everyone realizes something else is at play when numerous other workers begin to try and fatally harm themselves as well.
- Murder by Suicide: The meal deliverer from the episode’s first call is revealed to have killed several office workers by spiking most of their lunch orders with mercury; the effects cause them to act erratically before they hurl themselves out of the top floor’s glass window.
- Racist Grandma: The second call to the 126 comes from an elderly woman, Ellen, who calls the fire department on her neighbors who were using a BBQ pit that was spreading smoke into her yard. The neighbors, who turn out to be Hispanic, come out and the father of the family informs the 126 team that the woman is a racist who once called the cops on him during his daughter's birthday party just because they were waving around a baseball bat at a piñata. When Owen is about to make a citizen’s arrest on her for making a nuisance 9-1-1 call, the woman fakes having a heart attack. But when Marjan tries to give her CPR, the woman refuses because Marjan is Muslim (and presumably because she's a woman as well). She looks to Owen to do it, but he declines since he isn't CPR-certified. She then asks T.K. to do it, but changes her mind when T.K. admits that he's gay. She then turns to Judd, but he declines as well (whether it's due to him not being certified as well or simply not wanting to deal with her is unknown). To try and prove that she's not racist, the woman asks Paul, an African-American, to perform CPR on her. But when Paul admits that he's transgender, the woman finally gives up and tells Owen to arrest her.
- Screw This, I'm Outta Here: From the first call, the delivery guy tries to run away once Marjan mentions mercury-laced food. He doesn’t get very far.
- TK pretty much freaks out in slow motion at Carlos’ homemade dinner, and walks out when he fails to explain that he isn’t ready for dating, or starting another romantic relationship.
- Self-Harm: From the first call, the mercury laced food causes many of the office workers to inflict injuries to themselves: one woman hits her head against a window with enough force to smash the glass, another man stabs himself in the chest with office equipment, and another woman scratches her arm hard and deep enough to draw blood.
- Sherlock Scan: With some observations, Paul is able to deduce how the office workers got poisoned with mercury.
- Shirtless Scene: T.K. and Carlos throw their shirts aside as they make out.
- Shout-Out:
- While trying to help the office workers who have all gone insane and trying to harm themselves thanks to mercury poisoning, the team mentions that it's just like the movie Bird Box. Carlos has no idea what they're talking about.
- When Owen has a nightmare about losing his hair, Marjan refers to him as Lex and tells him Superman just left.
- Soft Glass: Averted. During the first call, it takes a lot of effort for the office worker to break the window with her head. When the 126 find her fallen body, Judd mentions that the windows are all tempered to withstand hurricanes.
- Tampering with Food and Drink: The office workers' food was laced with mercury by their courier.
- There Are No Therapists: Averted with Judd seeing a therapist, with Grace, to help deal with his PTSD from the original 126 tragedy.
- Title Drop: At the very of the episode Owen puts on a cowboy hat and exclaims "Yee-Haw."
- Wall Bang: From the first call, one of the poisoned workers bangs her head against a large window. She is able to smash through it and fall to her death.
