It's not easy going the distance on TV, and not many shows are able to cross the 200-episode mark. But the CBS police procedural "Blue Bloods" just …It seems safe to presume thatTom Selleck's roles in both "Blue Bloods" and "Magnum P.I." have been impactful affairs in his life. While he did not appear in the "Magnum P.I." reboot, his loyalties to Thomas Magnum seem to have not faded at all. This is especially noticeable considering how uneasy Selleck felt when "Blue Bloods" became the gig on his resume with the highest episode count.