Jack Schlossberg, JFK’s Only Grandson, Made His Television Debut on the “Blue Bloods” Season Finale

The young Kennedy celebrated the end of Harvard Law finals playing a cop on the CBS procedural.

jack schlossberg blue bloods

It’s often been said that a guest appearance on a police procedural—especially on long-running series like CSI or Law and Order—is a rite of passage for young actors. For non-actors, too, it seems, based on Friday night’s Blue Bloods finale, in which Kennedy scion Jack Schlossberg, John F. Kennedy’s only grandson, made his small-screen debut playing a cop, Officer Jack Hammer. (Just sit with that one for a second.)

“I don’t make the rules, I just enforce them,” Schlossberg captioned a post to his Instagram Friday afternoon teasing his appearance. “Cash me tonight on season 8 finale of Blue Bloods my dream come true!! Best show in the entire world.” In the first image of two included in the post, Schlossberg poses in costume with his mom, Caroline Kennedy, Blue Bloods cast members Vanessa Ray and Will Estes, and executive producer Kevin Wade; in the second, he stands outside his dressing room, still in costume, pointing to his character name on the door.

The role marks Schlossberg’s first foray into screen acting; his previous IMDb credits include appearances on Today, 60 Minutes, and Global Agenda, but, until now, he had no narrative work to speak of. (His eldest sister, Rose Kennedy Schlossberg, is an established comedic actress.) Instead, his focus, most likely, has been on school—he’s a student at Harvard Law, law school being something of a rite of passage itself for the Kennedy clan—and curating his very own usage guide on Instagram, where he posts screen caps of Google searches for such enthralling factoids as the difference between “water-repellent,” “waterproof,” and “water-resistant” and the specifics of Stormy Daniels’s lawyer Michael Avenatti’s fitness routine.

The role is certainly one way to celebrate the end of finals. No word on future parts for Schlossberg, but, even though Ansel Elgort has already staked a claim to portraying a young JFK, there is still plenty of family history for him to mine in future roles. Plus, with his new career, there’s always the chance of a big-screen appearance alongside Schlossberg’s longtime idol Dwayne “The Rock” Johnson. His Manhattan paddleboard expedition was a Baywatch audition all along.

Related: Jack Schlossberg, JFK’s Grandson, Has an Instagram Account You Should Be Following

A Guide to the Very Large, Very Beautiful, and Very Connected Kennedy Family

President John Kennedy and his wife Jackie and their children John Jr. and Caroline in Palm Beach, Florida in 1963. Ms. Kennedy lost two other children early in life, Arabella and Patrick.


Jackie Onassis and Caroline Kennedy attend Courtney Kennedy’s wedding to Jeff Ruhe at Holy Trinity Church in Georgetown, Washington D.C., in 1980.


Caroline Kennedy married her husband, the designer, author, and artist Edwin Schlossberg in Hyannis Port, Massachusetts in 1986. They had three children together, Rose, Tatiana, and Jack.


Caroline Kennedy attends “Rei Kawakubo/Comme des Garcons: Art Of The In-Between” Costume Institute Gala at the Metropolitan Museum of Art with her son, Jack Schlossberg in May 2017. He bears a resemblance to her late brother, John F. Kennedy Jr.


John F. Kennedy Jr., his sister Caroline Kennedy, and their mother, Jacqueline Kennedy sit together at an event in the late 1970s.


John Kennedy Jr. enjoying a hot Labor Day Weekend in Hyannis Beach, Massachusetts, where the Kennedy clan often spent summers.


John F. Kennedy Jr. and his wife, Carolyn Bessette Kennedy at an event in 1998. The couple wed two years earlier in 1996.


Even as an adult, John F. Kennedy Jr. loved to spend summers in Hyannis Port. Tragically, in 1999 he and his wife died in a plane crash on the way to the wedding of his cousin, Rory Kennedy in Hyannis Port.


John F. Kennedy, Jr. and his sister Caroline are cousins with Maria Shriver, whose parents were Eunice Kennedy and Robert Shriver.


Bobby Shriver, Christopher Shriver, Eunice Shriver, Anthony Shriver, Maria Shriver, Arnold Schwarzenegger, and Sargent Shriver pose for a family photo.


Patrick Schwarzenegger, Christina Schwarzenegger, Maria Shriver, Katherine Schwarzenegger and Christopher Schwarzenegger pose for a family photo. Patrick dated Miley Cyrus and Christina and Katherine are aspiring models.


John Jr. and Caroline Kennedy’s other cousins include Sydney and Chris Lawford, whose parents were Patricia Kennedy and Peter Lawford.


Here, Chris Lawford parties with Bianca Jagger at Studio 54 in 1970. Lawford battled with drug abuse problems as a young adult, but the death of his cousin David Kennedy to an overdose forced him to seek help. Today, he’s a philanthropist.


William Kennedy Smith, the son of Jean Ann Kennedy and Stephen Smith, went to prep school in Connecticut with Brooke Shields.


Edward “Ted” Kennedy, the brother of John F. Kennedy, had three children with his first wife, Virginia Joan Bennett: Kara, Edward Jr., and Patrick, all of whom went into politics and public service.


Joseph P. Kennedy II, the son of Bobby Kennedy, served as a member of the U.S. House of Representatives from the 8th congressional district of Massachusetts from 1987 to 1999.

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Joseph P. Kennedy’s son, Joseph P. Kennedy III has been serving as the U.S. Representative for Massachusetts’s 4th congressional district since 2013.

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Michaela Kennedy Cuomo and Mariah Kennedy Cuomo are the daughters of New York Governor Andrew Cuomo and his ex-wife, Kerry Kennedy, the third daughter of Bobby Kennedy.

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Rory Kennedy, the youngest child Bobby Kennedy, went on to be a successful documentary filmmaker, with titles like Ghosts of Abu Ghraib and Last Days in Vietnam.

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Robert Kennedy Jr., the other son of Bobby Kennedy, is an environmental activist and attorney, who also went on to marry the actress Cheryl Hines. She is his third wife.

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Kyra Kennedy, the daughter of Robert F. Kennedy, Jr. and his second wife, Mary Richardson, can often be found partying with Gaia Matisse, the great, great granddaughter of Henri Matisse.

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Conor Kennedy is also the son of Robert F. Kennedy Jr. and his second wife, Mary Richardson. He briefly dated Taylor Swift in 2012 and was arrested in 2017 following a bar fight in Aspen, Colorado.

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Bobby Kennedy III is the son of Robert F. Kennedy, Jr. and his first wife, Emily Ruth Black. He is an aspiring actor and director.

Ernesto Ruscio

Kick Kennedy is the daughter of Robert F. Kennedy Jr. and his first wife Emily Ruth Black. She’s made acting appearances on Gossip Girl, Curb Your Enthusiasm, and The Newsroom.

Taylor Hill

Patrick Schwarzenegger is the oldest son of Maria Shriver, a journalist who is a member of the Kennedy family, and Arnold Schwarzenegger. Photo courtesy of Getty Images.

Jim Spellman

Katherine Schwarzenegger is the daughter of Arnold Schwarzenegger and Maria Shriver, and the grand niece of John F. Kennedy. Photo courtesy of Getty Images.