Dawson Casting: Twenty-four year-old Ann-Margret as seventeen year-old Jody. Ron (twenty-eight year-old Peter Brown) and Buck (thirty-two year-old Skip Ward) were implied not to be much older than Jody.
Playing Against Type: Although Ann-Margret had played slight femme fatale roles before, this was quite a departure for her, and she later theorized it may have impacted her career.
Science Marches On: Jody is described here as merely "troubled." Today, she would've been diagnosed as bi-polar and been described as a danger to herself and others.