Mark Ruffalo Plays Twins With a Complex Past in HBO's I Know This Much is True

This weekend brings a new prestige miniseries to HBO that features not one but two bravura performances by Mark Ruffalo, alongside a host of other familiar faces. Also: SNL returns with what may be its final remotely-produced edition, Disney presents another all-star singalong special, and some of comedy's biggest names assemble for a charity show. Here's what's new and noteworthy on TV this weekend:

SATURDAY MAY 9

NEW EPISODE: It's not what anyone planned, but Saturday Night Live airs its season finale tonight with a third edition of SNL at Home. As has become custom with the show's remotely-produced episodes, NBC has not pre-announced a host or musical guest. 11:30 PM ET/8:30 PM PT on NBC

CABLE PREMIERE: HBO's big Saturday night movie premiere this week is Downton Abbey. A continuation of the popular television series of the same name, the film reunites Downton's residents and staff as they prepare the estate for a visit from the King and Queen of England. Watch the trailer. 8:00 PM ET on HBO

SEASON PREMIERE: AMC brings one of Britain's most mind-bending thrillers stateside as it adds Line of Duty to its primetime lineup. The series follows one case of police corruption throughout the season. Watch the trailer. 10:00 PM ET on AMC

SPECIAL PRESENTATION: Content-starved sports fans looking for programming options beyond Korean baseball may want to check out WWE's Greatest Ladder Matches, which compiles some of professional wrestling's most legendary battles. Watch as stars like The Rock, The Undertaker, and John Cena use the classic home improvement tool for more than just changing light bulbs and cleaning the gutters -- namely, for beating the pulp out of their opponents in and above the ring. Watch the preview. 8:00 PM ET on Fox

CABLE PREMIERE: Former American Idol champ Jordin Sparks takes her YouTube series Heart of the Batter with Jordin Sparks to cable. The premiere episode sees the one-time pie-baking star of Waitress whipping up on her favorite recipes, for strawberry moscato cupcakes. 1:00 PM ET on Cleo TV

SUNDAY MAY 10

SERIES PREMIERE: Based on the novel by Wally Lamb, I Know This Much is True stars Mark Ruffalo in the dual roles of Thomas and Dominick Birdsey, identical twins with a complicated personal history involving mental illness and a mysterious family past. Watch the trailer. 9:00 PM ET on HBO

SINGALONG SPECIAL: Following the success of its the first singalong special in April, ABC presents The Disney Family Singalong: Volume II. The second installment will feature performance by Katy Perry, Chloe x Halle, Halsey, Josh Gad, Donald Glover, Idina Menzel, Keke Palmer, Ben Platt, Seth Rogen, Rebel Wilson, Shakira, Billy Eichner, Jennifer Hudson, Christina Aguilera, Titus Burgess, The Muppets, and others as they flip through the Disney songbook, belting out family favorites from their homes to yours. 7:00 PM ET on ABC

COMEDY SPECIAL: Eddie Murphy, Adam Sandler, Billy Crystal, Tiffany Haddish, Chris Rock, Sarah Silverman, Jack Black, Whitney Cummings, Whoopi Goldberg, Kevin Hart, Kevin James, George Lopez, Howie Mandel, Marc Maron, JB Smoove, Marlon Wayans, and other big names in comedy are teaming with Funny or Die for the Feeding America Comedy Festival. The two-hour benefit show will raise funds for Feeding America, which supports a network of food banks across the country. Watch the trailer. 7:00 PM ET on NBC

SEASON FINALE: Having learned from its past mistakes, Outlander's season finale finds Claire (Caitriona Balfe) enduring mistreatment at the hands of her captors, even as Jamie (Sam Heughan) assembles a team to rescue her. Watch the preview. 8:00 PM ET on Starz

DOCUMENTARY: Celebrate Mother's Day with Comedy Central's Call Your Mother, a new documentary that sees comics such as Fortune Feimster, Louie Anderson, Awkwafina, Kristen Schaal, Jim Gaffigan, and Roy Wood Jr. reminiscing about their own mothers, and in some cases, performing standup sets as their moms sit in the audience. Watch the trailer. 10:00 PM ET on Comedy Central

SERIES PREMIERE: Single and sick of spending your quarantine alone? TLC is here to help with its new series Find Love Live, which seeks to prove there's still hope of meeting that special someone, even from the comfort of your own couch. Watch the preview. 11:00 PM ET on TLC

NEW EPISODE: Seeking answers to what is missing in her world, Killing Eve follows Villanelle (Jodie Comer) as she journeys home to Russia. Watch the preview. 9:00 PM ET on AMC

Mike Attebery is Senior Editor at Primetimer and the author of seven mystery thrillers. Follow him on Twitter at @mikeattebery.