Dynasty returned for Season 4 on May 7, 2021.
Season 4 Episode 18 is titled “A Good Marriage in Every Sense” Here is the synopsis from TV Guide: “Blake continues on his quest for the Senate and turns to someone very unexpected for help. Fallon continues to learn more about Amanda with the help of an old friend and a reluctant Adam and finds out all is not what it seems. Cristal gets a surprise visit, with life-changing results. Jeff and Dominique can’t see eye-to-eye. Meanwhile, Kirby continues on her healing journey which results in quite the surprise.”