In this erotic thriller (which at the same time parodies many stereotypical elements of the genre), Monica Martel (Sally Kirkland) is a one-time sex symbol whose career has seen better days. Hoping for a comeback, Monica agrees to appear in a steamy murder mystery, but there's a catch: while the script has a number of nude scenes for her character, Monica refuses to appear nude herself. An attractive younger woman named Lisa Shane (Sherrie Rose) is hired to serve as Monica's body double; Monica is less than enthusiastic about this development, especially when her husband and co-star Eric Cline (ndrew Stevens) begins showing a more-than-professional interest in Lisa. Lisa is nearly killed when a bomb causes her car to explode, and many on the film begin to wonder if Monica's jealousy has begun to spin into homicidal madness. Double Threat is available on home video in both R-rated and unrated versions.
~ Mark Deming, All Movie Guide