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A virtual sleuthing experience that will have you reviewing documents, tracking down clues, evaluating DNA matches and building family trees in order to stop the Sawtooth killer from striking again!

GSI: Sawtooth

A serial killer is on the loose in Twin Falls, Idaho. A nameless man is kidnapping young women from their own homes, taking them out of the city to kill them before returning their bodies to random locations around the city. Detective Maria Gonzalez heads up the investigation but has very few leads to pursue. In desperation, she turns to Venator--an investigative genetic genealogy company--in the hope that they can identify the killer from his DNA alone before he has the chance to take another life.

YOU will be joining the Venator team and, over the course of this three-hour virtual and interactive experience, you will help to solve this case using real genetic genealogical methodology.

You will be expertly guided through the various methods and technical approaches of investigative genetic genealogy by Your DNA Guide, Diahan Southard and genealogical crime mystery writer, Nathan Dylan Goodwin. As you try and identify the serial killer in the latest book in the Venator Cold Case Series, The Sawtooth Slayer, you will also be learning techniques to apply to your own DNA research.


Using a workbook and online / interactive documents alongside a live presentation, you will develop the skills involved in the real-life process used by forensic and genetic genealogists in the field. With yours and Venator's efforts, this will be a case of Genealogy Solves It!

Event Details:

To offer this amazing event to as many people as we can, we will be running the same event on two different dates and times.

Friday 18 August - 2pm ET / 7pm BST


Friday 9 June - 2pm ET / 7pm BST



Saturday 19 August - 11am ET / 4pm BST


Saturday 10 June - 11am ET / 4pm BST

Duration: 3 hours

Platform: Zoom (live)

Experience level: Beginner-intermediate with genealogy and DNA

Compatibility: Laptop / PC is best, tablet is suitable, but a phone not recommended

"The experience was totally awesome!"

LC, GSI Sawtooth attendee

"So fun and so well prepared and detailed." 

AJ, GSI Sawtooth attendee

"I loved this adventure. It was the perfect combination between entertainment and a learning experience."

JH, GSI Sawtooth attendee

"I had so much fun and and my confidence in my genetic genealogy skills has gone from zero to way up! I would recommend this to anyone, no matter what their level of skill in genetic genealogy."

CA, GSI Sawtooth attendee


Nathan Dylan Goodwin

Nathan is a writer, genealogist, educator and Creative Director at The Novel Guys. He has a BA degree in Radio, Film and Television Studies and an MA degree in Creative Writing at Canterbury Christ Church University. He is the author of many books, including the acclaimed Forensic Genealogist series and the Venator Cold Case series.


Diahan Southard

Diahan is a genetic genealogy expert, educator, founder and CEO of Your DNA Guide.

Diahan teaches internationally, writes for popular magazines, authored Your DNA Guide–The Book, and produces Your DNA Guide–the Academy, an online learning experience.


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