is leaping back to the beginning.NBC's sci-fi action drama closes out its freshman season Monday with Ben Song (Raymond Lee) going back to 2018, answering the question of why he leapt in the first place (see: to save Addison in the future) and how the team got to where they are now. ET's Will Marfuggi was with the cast on the set in February while they filmed the season's final episode and geared up for the upcoming sophomore run.«We find Ben at the top of this episode having leapt into Ben of the past, 2018 Ben,» Lee told ET. «This is something that we haven't seen before because we haven't had an opportunity for Ben to be in the headquarters before.