One of just a handful of Clint Eastwood movies in the spy / espionage genre. The films include Firefox (1982), Absolute Power (1997), The Eiger Sanction (1975) and In the Line of Fire (1993).
When Luther breaks in the mansion, he disables the security alarm. The President, Kristy Sullivan and the secret service arrive while Luther is still inside, yet no one is suspicious of the disabled security alarm.
Walter Sullivan: I'd been married to my Rebecca for forty-seven years. When she died, I decided I never wanted that pain again. One thing I knew about Christy, she was going to outlive me.