2 of 10Attribution: Getty
Days later, that kidnapper confessed to his brother, who called the FBI. The kidnappers, pictured from left, Barry Keenan, 23, Clyde Amsler, 23, and John Irwin, were later arrested and jailed.
At trial, their defence team claimed it was a publicity stunt to help the young singer's career, but there was no evidence to support that. The men were convicted and jailed over the abduction.
In 2012, Sinatra Jr. told the _Guardian_ newspaper in the UK that the allegation of a faked kidnapping was a stigma he lived with for years. He died in 2016.