Richard Davis and Dena Riley were drug-crazed serial killers willing to do the unthinkable. They were the classic killer couple, feeding off each other's depravity and, in the case of Dena, willing to do anything to please her partner. There were few lines this duo did not cross, even though their killing spree was relatively short and included comparatively few victims. Richard "Ricky" Davis was a repeat sex offender and general lawbreaker who was raised in Kansas City. He was institutionalized as a teenager. Later, he was imprisoned for stealing. Within months of his release, he was back in prison for raping a woman at knifepoint. He was sentenced to 25 years but was released in May of 2005 after roughly 18 years. For nine months after his release, Ricky Davis catered to a bondage, strangulation and sexual murder fetish with pornography. At the same time, he attended sex counseling, drug counseling and kept in touch with his parole officer religiously.
A look at some of history's most abhorrent, bizarre, obscure, famous and even funny crimes.