Tracker, the first new broadcast drama to premiere this season, is also the first freshman scripted series to land a Season 2 renewal. Amid strong ratings following its post-Super Bowl premiere, CBS has picked up a second season of the series starring Justin Hartley after four airings.一阵敲(qiāo )门声过后，只听见(jiàn )门(👩)外传来一个兴(xìng )奋的声音。