Lawrence Kasdan originally wrote his script for The Bodyguard in the late 1960s as a vehicle for Steve McQueen; by the time it reached the screen, Kasdan's star was another movie hearthrob, Kevin Costner. When imperious musical superstar Whitney Houston begins receiving death threats, she is compelled to hire a bodyguard. Enter Costner, who immediately incurs the wrath of Houston and her entourage by imposing prison-like security measures. An ex-Secret Service agent, Costner still hasn't purged himself of his guilt feelings over his inability to protect President Reagan from would-be assassin John Hinckley (in the original concept, the agent had been guarding JFK in Dallas, but Costner was too young to make this credible; besides, he and Oliver Stone had been there before). Gradually, and inevitably, Costner and Houston fall in love. Ralph Waite is cast as Costner's father, while Robert Wuhl and Debbie Reynolds please the crowd in their cameo roles. The Bodyguard was a huge box-office success, helped along in no small part by Whitney Houston's bestselling rendition of the old Dolly Parton hit "I Will Always Love You."