It arrived on DVD and Blu-ray on January 18, 2022.
DYNASTY is back, which means the knives are out and so is the Carrington family backstabbing. After somehow surviving her bachelorette party in the third season finale, Fallon (Elizabeth Gillies) just wants to get married to Liam (Adam Huber) and have a nice, calm life. Those aren't two words usually associated with Carringtons, and they won't be this season either as the happy couple faces their biggest challenges yet. Danger and temptation are as abundant as champagne and diamonds! Speaking of holy matrimony, Blake (Grant Show) and Cristal's (Daniella Alonso) relationship hit some blasphemous turbulence last season as they each strayed, and this season they'll work even harder to make a marriage last. Unfortunately, the universe has other plans - as do multiple enemies - which throws their fate up in the air. Meanwhile, after playing double agent with his parents, Adam (Sam Underwood) realizes he needs to do whatever it takes to make a name for himself outside of his massive family shadow. As he ruthlessly climbs the ladder of success, things with girlfriend Kirby (Maddison Brown) get messy. In secret, where betrayal runs deep in the Carrington world, an unlikely partnership between Alexis (Elaine Hendrix) and her sister-in-law turned mother-in-law Dominique (Michael Michele) is formed as they set out to take back what they feel is rightfully theirs, even it means deceiving their husband-slash-son Jeff. At the same time, Sammy Jo (Rafael de la Fuente) looks to expand his hotel and his heart, with help from Culhane (Rob Riley). Bonds will be forged and broken and friendships will be tested when they head down a darker path than expected. The road ahead is filled with betrayal, extravagance and deception for our favorite billionaire family, and that's on the good days. After all, as we've learned, there's always someone lurking around the corner ready to destroy a Dynasty.
- Elizabeth Gillies as Fallon Carrington (22/22)
- Daniella Alonso as Cristal Carrington (21/22)
- Elaine Hendrix as Alexis Carrington Colby (17/22)
- Rafael de la Fuente as Sam Jones (22/22)
- Sam Underwood as Adam Carrington (22/22)
- Michael Michele as Dominique Deveraux (17/22)
- Robert Christopher Riley as Michael Culhane (22/22)
- Sam Adegoke as Jeff Colby (17/22)
- Maddison Brown as Kirby Anders (17/22)
- Adam Huber as Liam Ridley (17/22)
- Alan Dale as Joseph Anders† (19/22)
- Grant Show as Blake Carrington (22/22)
- Kara Royster as Eva (7/22)
- Eliza Bennett as Amanda Carrington (6/22)
- Wil Traval as Father Caleb Collins (5/22)
- Lachlan Buchanan as Ryan (5/22)
- Ashley Day as Colin McNaughton (5/22)
- Luke Cook as Oliver Knoble (4/22)
- David Aron Damane as Leo Abbott† (4/22)
- Shannon Thornton as Mia (3/22)
- Ramón de Ocampo as Nolan Jamison (3/22)
- Randy J. Goodwin as Brady Lloyd (3/22)
- Ken Kirby as Evan Tate (2/22)
- Coby Ryan McLaughlin as Deputy Commissioner Dalkins (2/22)
- Daniel di Tomasso as Fletcher Myers (2/22)
- Corbin Bleu as Blaine (2/22)
- Stephanie Kurtzuba as Katy Lofflan (2/22)
- Kevin Kilner as Senator Bill North (2/22)
- Geovanni Gopradi as Roberto Flores (2/22)
- Sharon Lawrence as Laura Van Kirk (1/22)
- Roxzane Mims as Lo Cox† (1/22)
- Christian Ochoa as Victor Diaz (1/22)
- Brian Littrell as himself (1/22)
- Wakeema Hollis as Monica Colby (1/22)
- Jesse Henderson as Nash Martinez (1/22)
- Laura Leighton as Corinne Simon (1/22)
- NeNe Leakes as herself (1/22)
|No. in series||No. in season||Episode title||Written by||Directed by||Original airdate|
|65||1||"That Unfortunate Dinner"||Libby Wells||Michael A. Allowitz||May 7, 2021|
|66||2||"Vows Are Still Sacred"||Josh Reims & Jenna Richman||May 14, 2021|
|67||3||"The Aftermath"||Christopher Fife||Pascal Verschooris||May 21, 2021|
|68||4||"Everybody Loves the Carringtons"||David M. Israel||Andi Behring||May 28, 2021|
|69||5||"New Hopes, New Beginnings"||Jason Ganzel||Geary McLeod||June 4, 2021|
|70||6||"A Little Father-Daughter Chat"||Aubrey Villalobos Karr||Star Berry||June 11, 2021|
|71||7||"The Birthday Party"||Katrina Cabrera Ortega||Kenny Leon||June 18, 2021|
|72||8||"Your Sick and Self-Serving Vendetta"||Libby Wells||Melanie Mayron||June 25, 2021|
|73||9||"Equal Justice for the Rich"||Bryce Schramm||July 2, 2021|
|74||10||"I Hate to Spoil Your Memories"||Elaine Loh||Ayoka Chenzira||July 16, 2021|
|75||11||"A Public Forum for Her Lies"||Liz Sczudlo||Jay Karas||July 23, 2021|
|76||12||"Everything but Facing Reality"||Garrett Oakley||Brandi Bradburn||July 30, 2021|
|77||13||"Go Rescue Someone Else"||Josh Reims & Christopher Fife||Heather Tom||August 6, 2021|
|78||14||"But I Don't Need Therapy"||Aubrey Villalobos Karr||Brandi Bradburn||August 13, 2021|
|79||15||"She Lives in a Showplace Penthouse"||Katrina Cabrera Ortega||Heather Tom||August 20, 2021|
|80||16||"The British Are Coming"||David M. Israel||Grant Show||August 27, 2021|
|81||17||"Stars Make You Smile"||Jason Ganzel||Michael Allowitz||September 3, 2021|
|82||18||"A Good Marriage in Every Sense"||Bryce Schramm||Elizabeth Gillies||September 10, 2021|
|83||19||"Everything Looks Wonderful, Joseph"||Libby Wells||Brandon Lott||September 17, 2021|
|84||20||"You Vicious, Miserable Liar"||Elaine Loh||Robbie Countryman||September 24, 2021|
|85||21||"Affairs of State and Affairs of the Heart"||Liz Sczudlo||Geoff Shotz|
|86||22||"Filled With Manipulations and Deceptions"||Josh Reims & Garrett Oakley||Pascal Verschooris||October 1, 2021|
On February 9, 2021, it was announced that Luke Cook had booked the role of Kirby's ex-boyfriend Oliver.
- In a January 2020 podcast episode on the Zach Sang Show, lead cast member Elizabeth Gillies stated that she wishes to direct an episode this season.
- On April 28, 2021, it was confirmed that Gillies would indeed be making her directorial debut in the fourth season.
- On June 25, 2020, Michael Michele confirmed during her Instagram live that production of the fourth season would commence in late-August or early-September.
- On August 24, 2020, Michele revealed during her Instagram live that the shooting had been postponed tentatively to October of 2020.
- On July 26, 2021, Adam Huber revealed on his Instagram story that production for the season wrapped up that day.
- On September 18, 2020, Meredith Markworth-Pollack, the show's head costume designer and stylist, revealed that she won’t be returning for the fourth season.
- On September 26, 2020, Michael Michele posted a picture on Instagram informing the fans that filming for the fourth season has begin. 
- On May 7, 2021, Rafael de la Fuente revealed during an Instagram takeover that Grant Show would be directing the seventeenth episode of the season.
- On May 7, 2021, it was revealed in a TVLine interview with showrunner Josh Reims that a major character would die in episode 13, which aired on Friday, August 6.
- This character was revealed to be Joseph Anders.
- "CW Renews Batwoman, The Flash, All American, Supergirl, Legacies + More *Update Confirmed with Full Press Release*" - SpoilerTV
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- "Liz Gillies Talks Dynasty, Performing w/ Ariana Grande & More" - Zach Sang Show - YouTube