The mother to Jeff and Monica, she spent ten years estranged from children after walking out on them and her husband, Cecil Colby, who was convinced that she had been having an affair with Blake Carrington. This caused Cecil to act out and attempt to murder Blake, which led to his sentencing of ten years in prison.
It was later revealed that Blake was never sleeping with Dominique and was in fact protecting a family secret, which is further explained by Alexis when she reveals that Tom Carrington had an affair with Dominique's mother which led to a pregnancy. This makes Dominique the daughter of Tom Carrington, the half-sister of Blake Carrington, and her children cousins to the Carringtons.
Despite these revelations back home, Dominique remains in Las Vegas and makes no attempt to reach out to her children. However, after a near-death experience, Jeff makes an attempt to reach out to Dominique and ask her to come back home.  However, Monica intercepts the plan and threatens Dominique into never coming back, still bitter about her mother's vanishing act. This, however, does not keep Dominique away for long, and she returns upon hearing of Jeff's illness to, apparently, reconsile with her children and make up for lost time.
|Dynasty: Season 2 (3/22)|
|"Twenty-Three Skidoo":||"Ship of Vipers":||"The Butler Did It":||"Snowflakes in Hell":||"Queen of Cups":||"That Witch":||"A Temporary Infestation":||"A Real Instinct for the Jugular":||"Crazy Lady":||"A Champagne Mood":||"The Sight of You":|
|"Filthy Games":||"Even Worms Can Procreate":||"Parisian Legend Has It...:||"Motherly Overprotectiveness":||"Miserably Ungrateful Men":||"How Two-Faced Can You Get":||"Life is A Masquerade Party":||"This Illness of Mine":||"New Lady in Town":||"Thicker Than Money":||"Deception, Jealousy, and Lies":|
- Dominique Deveraux was confirmed to appear via the official synopsis for the second season.
- However, the synopsis contains an error, listing the character as Blake's "stepsister" rather than his "half-sister".
- On April 26, 2019, it was revealed that she debuts in the 20th episode of the second season. Her character's entrance shares the same episode title as in the original.
- It is revealed by Monica that "Dominique Deveraux" is Millie Colby's stage name.
- ↑ The events of Our Turn Now
- ↑ The events of A Line From the Past.
- ↑ The events of A Champagne Mood.
- ↑ After Jeff's illness caused by Adam Carrington, the Colbys discover Dominique sitting in his living room and back in Atlanta ("New Lady in Town").
- ↑ The CW Network Announces New Six-Night Primetime Schedule for 2018-19 by The Futon Critic (May 17, 2018)
- ↑ https://www.spoilertv.com/2019/04/dynasty-episode-220-new-lady-in-town.html