There have been so many infamous criminals in the past that many people either have had an encounter or close call with one - or at least know someone who has. In these instances, the offenders are known and captured, although elusive serial killers may still be out there and active. But these creepy stories may make you wonder just how close you have come without ever knowing it. From John Wayne Gacy to the notoriously charming Ted Bundy, regular people have met, worked with, and almost dated men and women later convicted of shocking crimes. Some of these encounters came as a shock, as even family-man BTK seemed normal on the surface. These Reddit anecdotes are haunting "what ifs" from real people who unwittingly interacted with some of the most well-known offenders, and these horror stories are all true.