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 Grand are the same names of the characters that Mills portrayed in the Disney films "The Moon-Spinners" and "In Search of the Castaways". Director Ronald F. Maxwell revealed that this was an homage to Mills' films with The Walt Disney Company. The characters of Walter and Lillian Elias are named after Walt Disney and his wife. (Disney's full name was Walter Elias Disney; Lillian was his wife's name.) Ronald F. Maxwell was chosen to direct this sequel, taking over from the original's director David Swift. When the film premiered on the Disney Channel, a documentary titled "On Location: Parent Trap