A top software engineer and her daughter are kidnapped. The kidnappers want her to decrypt sensitive government information, and they are threatening her and her daughter's life if she doesn't cooperate.
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On Dangerous Ground is a 1951 film noir directed by Nicholas Ray, starring Robert Ryan and Ida Lupino, and produced by John Houseman. The screenplay was written by A. I. Bezzerides based on the 1945 novel Mad with Much Heart by Gerald Butler.
