Let me preface this by saying, I know NOTHING about serial killers. However, I have a case near and dear to my heart about a 19 year old missing girl. She went missing 40 day ago, it's been reported and is being "Worked." I say that lightly, because I'm not sure they are doing much. However, 21 years ago, in the same town, a girl the same height, and build went missing as well. Apparently they both "walked off" to never be seen again. One 21 years ago, and one 40 days ago. Of course there are other ideas what could have happened to both, but it's a very small town. Is it possible 21 years could go by between these 2 incidents and them be linked? I mean, if the person responsible was in their 20's then, they'd be in their 40's now. Thanks for any and all help given.