John Wayne Gacy was executed 25 years ago this month. During his reign of terror, Gacy killed 33 young men and teenagers after luring them to his home. One man spoke to Inside Edition in 1991 about a close encounter he had with Gacy and revealed how he escaped. Gacy was arrested in 1978 and was sent to an Illinois state prison where he remained until his death. While in prison, Gacy became a renowned artist, which upset the families of his victims.