watch 01:56 The Loop (TV) Do you like this video? Play Sound Detective Jack Barnstone was a police detective of the New Gotham Police Department, partnered with Grace Tanner. Contents 1 Biography 2 Appearances 2.1 Birds of Prey 3 References Biography Barnstone helped Grace Tanner and Jesse Reese bring in Silas Waters after he attempted to steal an armored truck. Because of this, Waters hunted the three of them down, firstly killing Barnstone. Appearances Birds of Prey "Slick" References ↑ "Slick" Retrieved from "https://arrow.fandom.com/wiki/Jack_Barnstone?oldid=629343" Categories: Humans Characters Characters from Earth-203 Deceased Police New Gotham Police Department members Community content is available under CC-BY-SA unless otherwise noted.