Portrayed by Michael Nader, the character was introduced as a love interest for Alexis Colby in the series' fourth season in 1983.

[5] Jon-Erik Hexum, who had previously starred opposite Collins in a film, was one of the five actors under final consideration for the role.

[6] When ColbyCo abandons plans to acquire Denver-Carrington, board member Sam Dexter, an old friend of Blake Carrington's, sends his son, "Dex", to Denver to learn the reason.

After Alexis is arrested for Mark Jennings' murder, Dex uncovers evidence that Senator Neal McVane is the true killer.

He meets Alexis's daughter, Amanda Carrington, and has a love-hate rapport with her, which turns to passion when they are snowed in at a ski lodge.

He and Clay Fallmont travel to Caracas to find Caress Morell, Alexis's sister, who has evidence clearing Blake.

He travels home to Wyoming and convinces a friend's grieving widow, Sarah Curtis, to donate her late daughter's heart to the Carringtons' ailing child, Krystina.

He is also embroiled in the mystery of a flooded mine discovered on the Carrington estate that the Dexter family partly owned.

Dex learns Sable is pregnant with his child, causing a chaotic encounter at the Carlton Hotel that sends him and Alexis falling off a balcony into cliffhanger abyss.

In 1991's Dynasty: The Reunion an older couple is standing in the Carrington mansion, talking about the fall Alexis and Dex made at the Carlton Hotel.

It is tracked to the neighboring apartment of successful and charming hedge fund manager, Farnsworth "Dex" Dexter, (flown by his young nephew).

His father, Samir Dexter (David Diaan), once sat on the board of Carrington Atlantic, so their friendship (and Dex's crush on her) goes back a few decades.

Dex swears eternal love to Alexis at the wreck site, still blissfully ignorant to her toxic past and crimes.