Joanna Kerns plays the mother of Roby Marshall in this movie. Joanna Kerns also played the mother of Tracey Gold's character on the TV series "Growing Pains". The real life Roby Marshall married Tracey Gold.
The picnic area that Maria Marshall was killed is in Ocean County, New Jersey (between Manahawkin and Toms River).
The name of the high school that Felice Richmond (Rob Marshall's lover) was an administrator at was changed for the film. The real name of the school is Pinelands Regional High School (now Pinelands Regional Senior High School, as of 2002).
This isn't the 1st time Johnny Galecki and Doris Robert's starred in a movie together. They played in the festival famous - National Lampoon's Christmas Vacation as Grandson and Grandmother.
Robert O. Marshall was 6 years older than Robert Urich.