One of the men in the investigation was a New York City firefighter, who was later fired by the FDNY.
The sequel to the first story was an hour-long special airing in November 2005.
Since the third installment, law enforcement and other officials were also involved, leading to the arrests of most individuals caught. NBC affiliates WTMJ in Milwaukee, KSHB in Kansas City and WBRE in Wilkes-Barre have also done local versions of To Catch a Predator.
Various spin-offs have aired in the same format, including To Catch a Con Man, To Catch an ID Thief, To Catch a Car Thief and To Catch an i-Jacker, which featured i Pod thieves.
Bail is usually set between ,000 and ,000 per suspect.
Hansen stated, "Pedophiles have a very specific definition, people who are interested in prepubescent sex." The method that was used to catch these would-be sex offenders is derived from that normally used by Perverted-Justice.
Perverted-Justice volunteers build profiles identified as underage individuals on social networking websites, and enter chat rooms as decoys.
The series premiered in November 2004, and featured 12 investigations in total held across the United States.
The investigations were conducted as undercover sting operations with the help of online watchdog group Perverted-Justice.