Parent Trap III Mary Grand (Bridgette Andersen). Susan was married to Brian Carey (Alex Harvey). They divorced prior to the events of "Parent Trap III", and Susan reverted to using her maiden name, Evers. Hayley Mills returned in 1986 to the Disney Channel when she filmed "The Parent Trap II". She expressed no interest in returning for more sequels. In 1989, Mollie Miller soon began production on the next sequel, "Parent Trap III". Mills returned after her Disney series, "Good Morning, Miss Bliss" had ended. Barry Bostwick was cast as Jeffrey Wyatt and Patricia Richardson as his jealous, snobbish girlfriend, Cassie McGuire. Richardson
The Parent Trap II II" accompanied it. The documentary included footage of Mills as she describes the production of the film and her history with the Disney films. Filming took place for three weeks in the Tampa area. The exteriors of Robert E. Lee Elementary and the interiors of Mitchell Elementary were used as the summer school that Nicky and Mary both attend. A local Publix was used as the grocery store where Susan and Sharon narrowly miss meeting each other. It has been remodeled drastically since filming had wrapped. The film's score was composed by Charles Fox. The theme song is "Let's Keep