Investigating a crime they themselves fabricated!
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https://en.wikipedia.org/wiki/Suddenly_(1954_film)
Suddenly is a 1954 American film noir[1] crime film directed by Lewis Allen with a screenplay written by Richard Sale.[2] The drama features Frank Sinatra, Sterling Hayden, James Gleason and Nancy Gates, among others.[3] The tranquility of a small town is jarred when the U.S. president is scheduled to pass through and a hired assassin takes over the Benson home as a perfect location to ambush the president.