Naval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evideNaval officer Kevin Costner has a brief affair with beautiful, mysterious Sean Young, but when she is murdered he learns that she was the mistress of Defense Secretary Gene Hackman. What's more, Costner must investigate the death, knowing that "evide