Marla Adams (born August 28, 1938; Ocean City, New Jersey) is an American television actress, best known for her roles as Belle Clemens on The Secret Storm, from 1968 to 1974, and as Dina Abbott Mergeron on The Young and the Restless. As Belle Clemens, she was the show's reigning villainess for the last years of its run, stopping at almost nothing to destroy the life of the show's leading heroine, Amy Ames. Like Vicky and Dorian later on One Life to Live, the two rivals were at one time related through marriage. As Dina Abbott on The Young and the Restless from 1983 to 1986, in 1991 and again in 1996, she caused major disruptions in the lives of her three children and ex-husband John Abbott and his wife Jill. She reprised her role as Dina for three episodes on The Young and the Restless in 2008 when Katharine Chancellor was presumed dead.