Tracker has gone through cast changes - and exits - but could there be more reconfiguration soon? Before the midseason finale on Sunday, December 14, executive producer Elwood Reid weighed in on the onscreen changes. "What we're realizing is there are characters that come on that if it worked, we'd bring them back," he noted. "I do think the show can't always do that. But when it does do that, it makes the world feel a little bit more connected." Reid noted there was only one constant on the show: Justin Hartley's fan-favorite character.