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Crime stories with Nancy Grace on Sirius XM Triumph.

A serial killer stalking Virginia along the colonial parkway. Still no resolution. Who? What? Where? Why? When? I'm Nancy Grace. This is Crime Stories. Thank you for being with us. How has a serial killer managed to elude law and justice?

For the people that we know of dead as a result at the hand of the colonial parkway killer with me Bill Thomas the brother of serial killer victim Kathleen Thomas Cheryl McCollum director of the Col. K three search institute renowned L. A psycho analyst Dr. Bethany Marshall and the

crime online.com investigative reporter Lee Egan. Let me first start with Bill who sister Kathleen lost her life.

To this colonial parkway serial killer Bill what is the colonial parkway? Well thanks Nancy the colonial parkway is a national parkway.

It's a beautiful 23 mile long ribbon of land that was created by the national park service to create the feel of an old time highway and it connects

the historic sites of colonial Williamsburg James town and Yorktown and you say it's beautiful why is a serial killer named Bill Thomas after the murder of the

colonial parkway is beautiful stretch of road. Well sadly two of the four double homicides including my sister Kathy Thomas and her girlfriend Rebecca Dowsky two of the double homicides happened on the colonial parkway and then the other two murders of couples happened in

other lovers Lane situations about a half an hour in either direction from the center point which would be the parkway and newspapers and the media named the case some 30 years ago and they began calling it the colonial parkway murders.

Wow okay what I don't understand is the mo to Cheryl McCullum director of the Col case research institute you know it sounds a lot like

son of Sam's mo David Burkowitz who would target people sitting in cars and just with no connection to the victim didn't know that before the murder of the

Col case research institute you know it sounds a lot like son of Sam's mo David Burkowitz who would target people sitting in cars and just with no connection to the victim didn't know them before didn't have a

grudge wasn't angry about something that happened in the neighborhood or at work well just unload shoot them dead and that's the hardest kind of case to solve when there is no known connection between the victim and the killer.

You're absolutely right Nancy it's got a very son of Sam's bill as well as the very spontaneous just you know there's no rhyme or reason for it there's no clear motive there's no

confirmed signs of like robbery or rape it it looks like he literally stop them watch them and then approach them and kill them.

Let's talk about serial killer victim Kathleen Thomas bill tell me about the moment you discovered Kathleen was dead.

Well for me it started on a Sunday I got a phone call I was at my apartment in Philadelphia I was working for RCA video back then and the phone rang it was my mom and dad calling from

the old Massachusetts up there Boston where my family's from and it was both my mom and dad on the phone and they sounded so serious from the word go it wasn't unusual for me to hear from them on a weekend and usually the calls were fun and just you know family updates for kids on the second oldest but my folks sounded so deadly serious from the word go and I remember the first thing my dad said is are you sitting down and I remember thinking what a weird thing to say and then my dad began to say

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