![John F. Kennedy's Only Grandson Jack Schlossberg Makes His Acting Debut on 'Blue Bloods' | Entertainment Tonight John F. Kennedy's Only Grandson Jack Schlossberg Makes His Acting Debut on 'Blue Bloods' | Entertainment Tonight](https://www.etonline.com/sites/default/files/styles/max_1280x720/public/images/2018-05/jack_schlossberg_gettyimages-526901700.jpg?h=58c8a5e7&itok=dKhza4Hs)
John F. Kennedy's Only Grandson Jack Schlossberg Makes His Acting Debut on 'Blue Bloods' | Entertainment Tonight
Blue Bloods on Twitter: "Anthony clashes with Jack when he finds out he is dating Erin, Frank pushes Jamie to take the sergeant's test and Victor Lugo becomes Danny's unexpected ally. Stream
![ViacomCBS Press Express | DANNY BELIEVES A SERIAL KILLER IS ON THE LOOSE AND ERIN'S EX-HUSBAND RESURFACES, ON "BLUE BLOODS," FRIDAY, OCT. 12 ViacomCBS Press Express | DANNY BELIEVES A SERIAL KILLER IS ON THE LOOSE AND ERIN'S EX-HUSBAND RESURFACES, ON "BLUE BLOODS," FRIDAY, OCT. 12](https://public-assets-pressexpress.s3.amazonaws.com/assets/releases/docimages/6357/229227-175421/4a47a0db6e60853dedfcfdf08a5ca249.png)