Dynasty - Season 5 - Eps 20: The Collapse
Tensions between Krystle and Blake mount as their suspicions of one another grow. Claudia regrets sleeping with Adam. Dominique derails Alexis' attempt to buyout her company, but is unable to stop Brady's divorce proceedings. Alexis hires a private detective to investigate the circumstances surrounding Jeff's marriage to Nikki: She learns the girl fabricated the marriage license and deluded Jeff into believing he had married her while drunk. Jeff confronts Nikki, who confesses and leaves the mansion. Dominique is suddenly seized with a violent cough and drops to the floor, unconscious.
About Dynasty

Title: Dynasty
First Air Date: 1981-01-12
Last Air Date: 1989-05-10
Status: Ended
Rating: 6.5/10 (from 115 votes)
Language: EN
Seasons: 10
Total Episodes: 220
Network: ABC
Genres: Soap, Drama
Production Companies: Aaron Spelling Productions
Synopsis
The saga of a wealthy Denver family in the oil business: Blake Carrington, the patriarch; Krystle, his former secretary and wife; his children: Adam, lost in childhood after a kidnapping; Fallon, pampered and spoiled; Steven, openly gay; and Amanda, hidden from him by his ex-wife, the conniving Alexis. Most of the show features the conflict between 2 large corporations, Blake's Denver Carrington and Alexis' ColbyCo.
Cast

John Forsythe
Blake Carrington

Linda Evans
Krystle Carrington

Joan Collins
Alexis Carrington Colby

John James
Jeff Colby

Gordon Thomson
Adam Carrington

Michael Nader
Dex Dexter

Heather Locklear
Sammy Jo Dean Carrington

Emma Samms
Fallon Carrington Colby

Stephanie Beacham
Sable Colby