( CNN ) They thought they had found a paradise . They thought wrong . The resolution of the Alexandria story arc is the first of six things you should watch this week . 1 . `` The Walking Dead , '' 9 p.m . ET Sunday , AMC . `` The Walking Dead 's '' season-long plotline involving a group that headed north from Atlanta all comes to a head in a 90-minute season finale on Sunday night . It 's been a season in which Sonequa Martin-Green 's character , Sasha , stood out : She 's on the verge of insanity after the deaths of her brother and many friends . `` We went to a very deep place , '' Martin-Green said . `` It was hard , depressing , bad and thrilling all at the same time . A lot of the stuff was quite challenging for me . It was something I can definitely look back on and be proud of . '' With Rick having gone on a blood-soaked , gun-wielding rant in front of the leaders of the Alexandria community , his fate and that of his fellow survivors hangs in the balance . `` There 's gon na be all the twists and turns you would expect and twists and turns you did not expect , '' Martin-Green said of the episode . `` The finale is probably the most jam-packed episode there 's ever been . Things are packed into it like sardines . All of the life is squeezed in there . They lengthened it to 90 minutes because there 's just so much . It 's a supersized monstrosity . '' Her co-star Josh McDermitt added , `` There 's so much good stuff in this episode they did n't want to do the hourlong version . I ca n't wait for people to see it . And personally , I think it 's going to go down as one of the best episodes the show has ever done . '' 2 . `` Call the Midwife , '' 9 p.m . ET Sunday , PBS . The fan favorite retro British series returns for a fourth season in the U.S . Though the ladies of ladies of Nonnatus House may not be quite as big as `` Downton Abbey , '' fans of that series should enjoy this one . 3 . `` The Dovekeepers , '' 9 p.m . ET Tuesday and Wednesday , CBS . Roma Downey and Mark Burnett had a ratings smash two years ago with `` The Bible '' ( and they have a sequel , `` A.D. , '' coming next week on NBC ) . CBS has their follow-up in a two-part miniseries . It 's based on a novel following the journey of four women in the year 70 , one of whom is played by `` NCIS '' alumna Cote de Pablo . 4 . `` Weird Loners , '' 9:30 p.m . ET Tuesday , Fox . Stop me if you 've heard this one : A group of single men and women has to live in close proximity in New York . Fox 's latest sitcom , which hopes to build from the `` New Girl '' lead-in , stars two actors who have deserved their own shows : Zack Knighton ( `` Happy Endings '' ) and Becki Newton ( `` How I Met Your Mother '' ) . 5 . `` Olympus , '' 10 p.m . ET Thursday , Syfy . Syfy takes on Greek mythology in this new series with plenty of magic , creatures and interesting costumes . 6 . `` Outlander , '' 9 p.m . ET April 4 , Starz . The Scottish time-travel romance returns to finish off its first season , as Claire and Jamie 's relationship is tested . No matter what happens , the hardcore fan base will be there every step of the way .
`` The Walking Dead '' has a 90-minute season finale on Sunday . Co-star Sonequa Martin-Green says it 's the most jam-packed finale yet . TL;DR A new study finds that people who watch TV are more likely to be overweight or obese than those who don't.