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 twins. "I was astonished. I thought what they wanted to do was try to repeat the original film in some way. I wasn't too sure that was a very good idea. It was a good film, and it has passed the test of time," Mills said to the "Chicago Sun-Times". The film was written by Stuart Krieger. In the original draft of the script, Sharon was originally going to have a son, instead of a daughter like she does in the finished product. This was changed when rewrites of the script were ordered. The names of Nikki Ferris and Mary