It has been over a year since Syfy’s The Expanse had its December 2015 series debut, and the show is now finally returning for its second season. It bows on Wednesday this week at 10 PM EST after The Magicians and will air a double-episode with limited commercial interruptions. Also returning this week, and also Wednesday, is The CW’s The 100 which has its Season 4 debut at 9 PM EST. And on Thursday, NBC’s superhero comedy series Powerless has its bow at 8:30 PM EST. Also of note: fans of Gotham and Lucifer should know that both shows air their last new episodes this week until late in April, an odd scheduling move by FOX. Then the next week brings the premiere of FX’s Legion and the return of The Walking Dead. See the full listings at our partner SciFiTVSite.com.