Frankie Thomas nearly steals the show from right under Bonita Granville in "Nancy Drew, Troubleshooter," starring Granville as Drew, Thomas as boyfriend Ted Nickerson and John Litel as Carson Drew, Nancy's dad. As has been mentioned, the Nancy in the books was much more serious and sheer perfection as she had "luncheon" with her friends George and Bess, drove around in her roadster without crashing into anything, and solved mysteries. Granville is a very bouncy, reckless driving Nancy who becomes jealous in this entry into the series when dad gets a girlfriend.
In this film, Nancy and her dad leave the city to help a friend beat a murder charge. Turns out that Ted and his family are vacationing in the same area, and Nancy drags him around as she investigates. Thomas is hilarious, especially when he and Nancy are abandoned in a crop duster mid-air.
The only drawback to this delightful movie is Willie Best's unfortunate stereotypical characterization of Apollo. Though Best is very good, it's uncomfortable to watch him. Otherwise, I like this one the best of the "Nancy Drew" series.