Over the course of her time on the show, Morgan DeWitt became one of the most infamous villains in "The Bold and the Beautiful" history. Morgan made her appearance as a Forrester house model. Her backstory involved an illicit affair with the Forrester founder's son, Ridge Forrester (Ronn Moss). Morgan, who was in her youth at the time, eventually became pregnant by Ridge. When she confided the secret to Ridge's mother, Stephanie (Susan Flannery), she persuaded Morgan to leave L.A. and to have an abortion in order to prevent harm to the Forrester brand.

Morgan later returned to L.A. and started working again as a model for the fashion house with the intention of getting impregnated again by Ridge. Her plot triggers a sequence of highly dramatic events that culminates in Morgan attempting to drown Stephanie. This leads to her arrest and her ultimate incarceration in a psychiatric institution (per Soap Opera Digest).