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Letterman (CBS)

Mahendru (Brian To/WENN.com)

Coming up in primetime television.

Soaps.com has a major treat for "Revolution" fans for the week of April 20 as well as a Netflix return, guest appearances as we count down the last episodes of a historical late-night show, a "PLL" return date, renewals, revivals, teasers, casting and more in our latest Primetime Dish column…

American Horror Story: Hotel:
Sarah Paulson, who's played in all four chapters of the FX series, will be returning for the fifth. Executive Producer Ryan Murphy announced that the actress would be appearing in the latest installment as a villain. Stay tuned for future character details.

Arrow:
In the CW's Wednesday April 22 8:00 PM episode titled "The Fallen," Ra's al Ghul makes Oliver an offer he can't refuse, leading the team on a journey to Nanda Parbat. And a heartbroken Felicity takes matters into her own hands.

David Letterman's final Late Show guests:
After thirty-three years David Letterman will say goodbye as the longest-running host in late night history on Wednesday May 20. Take note of the actors set to make appearances on the show over the next six weeks: George Clooney, Robert Downey, Jr., Will Ferrell, Tina Fey, Tom Hanks, Jack Hanna, Scarlett Johansson, Michael Keaton, Steve Martin, Bill Murray, Sarah Jessica Parker, Don Rickles, Julia Roberts, Ray Romano, Paul Rudd, Jerry Seinfeld, Martin Short, Howard Stern, John Travolta, Bruce Willis, Oprah Winfrey, The Avett Brothers and Brandi Carlile, Elvis Costello, Dave Matthews Band, Emmylou Harris, Norah Jones, Mumford and Sons, Ralph Stanley and Amos Lee, and many more names to be announced and scheduled in the coming weeks. Tune in weeknights at 11:35 PM on CBS as not to miss!

Devious Maids:
Season three of the Lifetime series will go on without three more regulars. Though Edy Ganem (as Valentina Diaz) and Drew Van Acker (Remi Delatour) will turn up in various episodes, Mark Deklin (Nicholas Deering) will not take part in the new season. Tune in Monday June 1 at 9:00 PM for the premiere. Brianna Brown (Taylor Stappord) tweeted this teaser photo:

Emerald City:
Back on! Though NBC announced the decision not to move forward with the "Wizard of Oz" themed series back in August of 2014, due to creative differences, the network is now making plans to move forward with ten episodes with David Schulner ("Dracula") at the helm. Stay tuned for its premiere date.

Game of Thrones:
In HBO's Sunday April 26 9:00 PM episode titled "High Sparrow," Queen Margaery enjoys her new husband in King's Landing, and Tyrion and Varys set out on the Long Bridge of Volantis.

Grey's Anatomy:
Read our Grey's Anatomy Spoilers to find out who has to spring into action at the hospital this week in ABC's Thursday April 23 8:00 PM episode titled "How to Save a Life." Tune in tonight, as Soaps.com posts recaps after each episode airs.

iZombie:
In the CW's Tuesday April 21 9:00 PM episode titled "Virtual Reality Bites," Liv, Clive and Ravi investigate the murder of a computer-hacker, which leads to Liv inheriting intense agoraphobia and mad skills at computer gaming. Ravi offers to help Liv from inside the game, and Blaine gets to know someone close to Liv.

Jane the Virgin:
It's all about the truth in the CW's April 20 9:00 PM episode titled "Chapter Nineteen." Monday episode teasers: Jane suggests she and Rafael move past their problems. Xo is surprised by Rogelio's reaction to her secret. Alba flashes back to who pushed her down the stairs. Michael discovers who was involved in the Sin Rostro, and Petra is forced to save herself.

Nashville:
In ABC Wednesday April 22 10:00 PM episode titled "The Storm has Just Begun," many stars gather to support Teddy's music education initiative, "Note by Note. Juliette gets ready to return to the spotlight, and Layla finds herself pushed into it right alongside Jade St. John (Christina Aguilera). Rayna, Deacon, Maddie and Daphne prepare to take the stage and perform at the gala, and Deacon receives a life-changing phone call.

Orange is the new Black:
Renewed! Netflix has renewed its hit series for a fourth season, which will premiere in 2016. Until then, season three will premiere on Friday June 12. Watch the trailer below, as the women of Litchfield must decide who and what to believe in.

Orphan Black:
In BBC's Saturday April 25 9:00 PM episode titled "Episode Two," Castor seeks out the Leda clones for original tissue samples. A mysterious new villain examines an imprisoned and pregnant Helena. The Castor boys toy with a frightened girl named Patty, and Sarah and Art are hot on the Castor trail, which could put lives at risk.

Pretty Little Liars:
Season six premiere date! Missing The Liars? Read Soaps.com's Pretty Little Liars Spoilers to find out when the girls return for season six.

Reign:
In the CW's Thursday April 23 9:00 PM episode titled "Abandoned," Mary aligns herself with France and Francis. Condé's bold move could tie him to England. Catherine and Narcisse set out to win favor in court. Kenna and General Renaude get closer, as Bash becomes increasingly distant.

Revenge:
Read Soaps.com's Revenge Spoilers to find out who worries Emily has finally gone too far in ABC's Sunday April 26 10:00 PM episode titled "Aftermath."

Revolution:
Coming back to say goodbye! After the NBC finale and cancellation last year fans have been pleading for the rest of the story to be told for the post-apocalyptic science drama - and their voices were heard. A four-chapter digital comic book will be created in order to give fans closure to storylines. Working with DC Comics and artist Angel Hernandez, one chapter per two weeks will be available beginning on Monday May 4 at Comic Book and later at Revolution's Facebook, where Executive Producer Eric Kripke posted a letter to fans as well as a sneak peek into the comic.

Scandal:
In ABC's Thursday April 23 9:00 PM episode titled "First Lady Sings the Blues," the team is in serious danger while trying to take down B613 and is forced to do something drastic to ensure their safety. The nation turns against Mellie, which results in Cyrus rushing to her defense

Scorpion:
Season finale! In CBS' Monday April 20 9:00 PM finale episode titled "Postcards From the Edge," as Walter's car teeters on a cliff-side, the team must pull together and rush to the rescue.

Silicon Valley:
Renewed! The HBO comedy will be back with a third season. Thomas Middleditch (Andrew) stars.

Supernatural:
One brother sets out to save another in the CW's April 22 9:00 PM episode titled "The Werther Project." Wednesday episode teasers: Sam goes on a hunt to find a magical box in the hopes it can cure Dean. Magnus sets up a deadly alarm system on the box, which puts Sam and Dean's lives in danger.

The Flash:
Two go in search for the truth in the CW's April 23 8:00 PM episode titled "Who is Harrison Wells?" Tuesday episode teasers: Joe and Cisco continue investigating Dr. Wells and ask Captain Lance for help. The Black Canary asks Cisco for a favor. And Barry tries to capture Hannibal Bates, a meta-human who can transform into any person he touches.

The Following:
TVLine has learned that Annet Mahendru ("The Americans") will appear in a few episodes toward the end of the current season as Eliza, a sophisticated, sexy yet dangerous woman that Ryan (Kevin Bacon) will discover. Tune in Mondays at 9:00 PM on FOX.

The Messengers:
In the CW's Friday April 24 9:00 PM episode titled "Strange Magic," Vera, Erin, Joshua, Raul and Peter are drawn together by destiny and meet the mysterious Rose, who reveals they are angels with a very important mission. And the Man's identity is revealed, as he entices Vera with clues about her missing son.

The Originals:
Read The Originals Spoilers to find out about Dahlia's deadline regarding baby Hope, who receives an ultimatum and more in the CW's Monday April 20 8:00 PM episode titled "When the Levee Breaks."

The Vampire Diaries:
Read our The Vampire Diaries Spoilers to find out how Damon struggles over telling Elena about the cure, who looks for answers from their traumatic past and more in the CW's Thursday April 23 episode titled "Because."

True Detective:
Return date! The HBO series returns with season two, which will contain eight episodes, on Sunday June 21. Watch the promo video for what's ahead for Ray Velcoro (Colin Farrell), Frank Semyon (Vince Vaughn) and the rest of the crew.

Unforgettable:
Fans of the canceled CBS series were excited when A&E announced its reboot on the new network. Unfortunately, during the transition into season four many actors went on to do other things and now Dallas Roberts (as Eliot Delson) will only appear in two guest appearances and Jane Curtin (Joanne Webster) and Tawny Cypress (Cherie Rollins-Murray) will not return as series regulars. Stay tuned for the police drama's return date.

Veep:
Renewed! HBO has renewed its comedy series for a fifth season. Julia Louis-Dreyfus (Selina Meyer) stars.

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Header Photo Credit: Orange is the new Black (Netflix)

- Amy Mistretta