Oscar Isaac's Moon Knight Journey Ends, The Circle Pings Back On Netflix

It’s a day of beginnings and endings as Oscar Isaac wraps his six-episode Marvel series Moon Knight and The Circle returns for its fourth season. Also today: Netflix charts the 1979 emergency at Three Mile Island nuclear power plant, The Masked Singer unmasks two more celebrities, Good Sam concludes its first season, and more. Here’s what’s new and noteworthy on TV this Wednesday:

Moon Knight: Limited series finale. Oscar Isaac’s double-duty stint as mild-mannered Steven Grant/mercenary Marc Spector comes to an end in the sixth and final episode of the Marvel drama. The finale will see Steven, who didn’t make it to the Field of Reeds, fight to survive, and reveals whether Marc will step in to assist his fragmented other half. Watch preview. Streaming on Disney+

The Circle: Season 4 premiere. A new group of wannabe influencers enter The Circle hoping to catfish their way to a cash prize. Netflix promises the new season is the spiciest yet, with more drama, new challenges, and surprise celebrity guest appearances. Four episodes stream today, with additional episode drops Wednesdays through May 25. Watch trailer. Streaming on Netflix

Meltdown: Three Mile Island: Complete docuseries. The team behind Erin Brockovich tackles the near catastrophe at Pennsylvania's Three Mile Island nuclear power plant through the lens of chief engineer and whistleblower, Richard Parks, as well as the community it impacted. Read our review. Streaming on Netflix

The Masked Singer: New episode. The remaining three singers from Group C perform for the last remaining spot in the finale. Two will be unmasked, while the winner will return to compete with Firefly and Ringmaster for the coveted Golden Mask trophy. 8:00 PM ET on FOX

Good Sam: Season 1 finale. In the wake of Sam’s (Sophia Bush) successful execution of a groundbreaking surgical technique, her battle with Griff (Jason Isaacs) takes a shocking turn that will irrevocably change their family dynamic and the future of the hospital. Watch preview. 10:00 PM ET on CBS

Survivor: New episode. Jonathan becomes a target. Watch preview. 8:00 PM ET on CBS

Married at First Sight: Decision Day Dish: Boston: Special presentation. Several MAFS favorites from the past sit down to discuss the Boston season and attempt to predict who will stay married and who will get divorced on Decision Day. With host Donna Rizzo. 8:00 PM ET on Lifetime

Beyond the Edge: New episode. The jungle tests the celebrities’ endurance, prompting another star to ring the bell. 9:00 PM ET on CBS

The Conners: New episode. Darlene (Sara Gilbert) struggles to cope with the stress of construction, and makes a life-changing decision. Elsewhere, Lou (guest star Christopher Lloyd) returns as Mark’s (Ames McNamara) combative contrabassoon teacher. 9:00 PM ET on ABC

Good Trouble: Season 4 spring finale. The FGCs give Mariana (Cierra Ramirez) the OK to date Evan (T.J. Linnard), but she’s conflicted. Meanwhile, Alice (Sherry Cola) tries to gain the courage to go back on stage, Joaquin (Bryan Craig) gets a tip on his sister’s whereabouts, and Isabella’s (Priscilla Quintana) parents propose a new idea for the baby. Watch preview. 10:00 PM ET on Freeform

One Chicago: Encore presentation. Chicago Med, Fire, and P.D. continue their two-week hiatus. Repeats of all three shows air tonight, beginning at 8:00 PM ET on NBC

NBA Playoffs: Round 2 continues with two marquee matchups, both airing on TNT:

• Philadelphia 76ers at Miami Heat 7:30 PM ET/4:30 PM PT
• Dallas Mavericks at Phoenix Suns 10:00 PM ET/7:00 PM PT

Claire Spellberg Lustig is the Senior Editor at Primetimer and a scholar of The View. Follow her on Twitter at @c_spellberg.