The last of this year’s debuts lands this week as the time travel series Travelers has its bow on Netflix this coming Friday. That show debuted on the Canadian Showcase channel in October and has been getting pretty good reviews from up north so far. Also this Friday, Netflix’s Sense8 gets a two-hour Christmas Special episode to tide fans over until that show returns for its second season this coming May. And on Christmas night, the Doctor Who has an Xmas special episode also to tide fans of that show over until its tenth season arrives next year. Season finales for the week include Mars (NGC), People of Earth (TBS), Scream Queens (FOX), Aftermath (Syfy), and Falling Water (USA). Also of note, BBC America will start up a Doctor Who marathon on Tuesday at 6 AM EST that will go all the way into next week. See the full listings at our partner SciFiTVSite.com.