Justin Hartley and Donnie Wahlberg interview each other ahead of the series premiere of Wahlberg’s ‘Blue Bloods’ spinoff, ‘Boston Blue,’ on Friday, Oct. 17, at 10 p.m. ET/PT, and the return of ‘Tracker’ for season 3 on Sunday, Oct. 19, at 8 p.m. ET/PT, both on CBS.
