Blue Bloods likes to keep things all in the family. This week’s episode, “Insult to Injury” was written by the husband of one of the show’s founding producers, and the story reveals that even Frank (Tom Selleck) knows a few things about kids that no one teaches in the classroom. The Commissioner does his best to get Baker (Abigail Hawk) to find a reason why he has to bailout of being a chaperone for grandson, Sean’s (Andrew Tarraciano) museum field trip, but his calendar is clear, so he sets off to duty. With Maria away in court, Danny (Donnie Wahlberg) is supposed to pull desk duty, completing overdue DD-5’s, when a call comes in from a desperate girl, Jill (Bess Rous), who details her plan to kill herself and then, the whole precinct, in retribution for the release of the drunk driver who killed her parents on Christmas Eve of 2008. She has spotted the driver, Decker (Lief Riddell) on the street and drinking again, which led to her plot. She calls wanting to take down the original case detective, Kildane, who’s been retired for years. Danny coaxes her to a trusting place while trying to track names and locations in time. Jamie (Will Estes) and partner, Eddie (Vanessa Ray) go to a food truck on the frigid day of street patrol, where Jamie praises the wheels of a pretty courier, Maya (Shelley Hennig), who tries to take Jamie and the vendor for a ride, passing fake $50 bills and phone numbers.
Frank doesn’t seem many happy faces on the field trip, as teacher, Ms. Carpenter (Annie Wersching), with her insistence on straight lines, low voices, and never touch, leaves little room for fun. The teacher tells Frank he only needs to “look authoritative,” but in typical fashion, he goes outside the lines, particularly when she tries to order a bathroom break. He reminds her from memory that boys and girls don’t volunteer to “go” in a group together, and instead, he separates them successfully in groups by the wall, and peeing is no problem! When the vendor tells Jamie and Eddie about the fake bill, they go after Maya, Jamie telling her “we find criminals” in response to her flirtatious overture. With bundles of fake bills in her backpack, she gives up the name of the counterfeiter, Werner, saying she is only him transport. Eddie wants to book her then on charges, but Jamie has thoughts of her leaving him to the big man. While Erin (Bridget Moynahan) helps to uncover case details, Danny hears Jill’s taser, and knows there’s not much time. Decker got released with new attorneys on a “technical paper jam,” and Danny feels the girl’s pain, while having to put a stop to her plot. By this time, police are covering Jill’s location and Decker’s apartment, both empty. Danny decides to call in Jill’s brother, Ryan (Brandon Tyler Harris) to appeal to his sister.
Jamie nearly knocks at the counterfeiter’s door, but finally, better judgment kicks in, and he takes Maya back in for booking at the station him. Eddie asks if he wants to go for a drink and “talk about it,” but he gracefully declines, saying, “I’d be talking to the wrong person.” At the Museum, Frank calls an impromptu vote for who wants to see dinosaurs and relics of real animals, to uproarious approval. Despite her brother’s and Danny’s pleas, Jill lures Decker to her car, with the guise of needing help with a tire, she tases him and gets him in her trunk. Ryan gives details of gardens where Jill goes to visit their departed mother, so Danny desperately tries again, telling his Sgt. that he “blew it.” In Marvelous Blue Bloods style, Frank gives a lesson on Teddy Roosevelt, careers, and natural history all-in-one, and makes quite the impression on Daisy (Sadie Sink), to whom he was introduced by Sean, with her desires of becoming a Park Ranger, as well as Ms. Carpenter, the teacher, who had to give him credit.
Danny intercepts Jill before she can finish the deed of finishing Decker off, coaxing her gun away, but still leaving Decker with a “go to hell” after sparing his life. In one of those pensive final scenes, Jamie asks his dad about when his brother and fellow family detectives made that rank. He wonders that he “didn’t have the genes,” even after his father’s praise for his better judgment with the counterfeiter, along with the Secret Service. There are deep things going on in Jamie’s mind far beyond finding another date.