- HD 1080
- Runtime: 103m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Michael Apted
- Stars: Teri Garr, Peter Weller, Christopher Collet, Corey Haim, Sarah Jessica Parker
- keywords: tension, little brother
- Production_studio: Jaffe-Lansing, Witt/Thomas Productions, Paramount Pictures
- Slogan: Jake Livingston had to grow up fast... because his mother didn't.
- The Firstborn is featured in the top rankings of 1984
- #22 in Top Thriller Movies of 1984
Because he's the oldest, Jake has been the man of the house, since his parents divorce. When Mom starts seeing Sam, who always seems to be trying some new way to get rich quick, and declares he's the man of the house now, Jake puts up with it. Until he discovers Sam's illegal activities.