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GSI: General Questions

What does GSI mean?

GSI stands for Genealogy Solves It (a play on the crime-solving TV series, CSI) and is the innovative creation of DNA guru, Diahan Southard and genealogical crime mystery author, Nathan Dylan Goodwin. Together, they create DNA-themed events (in-person, virtual and on-demand) where participants are tasked with solving murders using realistic but fun IGG methodology (Investigative Genetic Genealogy).


Are these events difficult?

No! No previous experience is necessary; Diahan and Nathan guide you the process step-by-step, giving expert advice along the way. The events are always designed to be educational but also FUN!

Tell me more about Diahan and Nathan.

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. More information can be found on her website.

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. More information can be found on his website.

Which GSI events are currently running?

GSI: Sawtooth (on-demand) and GSI: Superstition Mountains, London (live & in-person). FAQs for both events are below.

A Day of DNA with Diahan & Nathan

(including GSI: Superstition Mountains - London LIVE)

What's it all about?!

The event is a bespoke Venator Cold Case created by Diahan Southard and Nathan Dylan Goodwin, exclusively for GSI Events. The DNA Day experience will teach the basics of investigative genetic genealogy in a fun and creative way. This special London event will also see attendees receive workshop tuition and talks from Nathan Dylan Goodwin and Diahan Southard. More information can be found below.


When is the event?

The in-person event is being held on two days this summer in London: Saturday 17 August and Sunday 18 August 2024, 10 a.m. - 9p.m. The on-demand version will follow shortly afterwards. See the exact times and schedule on the sign-up page.

Where is the event?

The event will take place at the brand-new Society of Genealogists building in London. The full address is: 40 Wharf Rd, London N1 7GS.

Why such a long day?

Because we have so much in store for you! We need time to offer talks, workshops, book launch, signings, lunch and refreshments. Don't worry, there will be several breaks built into the day!

What is the exact structure of the day?

We've almost finalised the day! You can find the itinerary here.

What is the lunch going to be?

Lunch will be a selection of sandwiches (meat, vegan & vegetarian) and cakes.​ Hot and cold drinks will be provided throughout the day.

I've already done GSI: Sawtooth. Is this the same?

No! This is a bespoke case and features different records and different creative and fun ways to crack a cold case! 

Do I need to be an expert in genetic genealogy or genealogy?

No! This has been designed for all levels of experience. The day will start with a talk by Nathan Dylan Goodwin on what IGG is and this will be built on with Diahan's talk and workshop. By the time of the GSI event you will be ready to crack the case!

Do I need subscriptions to the major genealogy websites, such as Ancestry, MyHeritage and GenealogyBank?

No, everything you need will be provided! You will be guided through the process by Nathan and Diahan, mixed in with simulations of real-world genealogy documents, media and websites.

Does it matter which day I attend?

No, both the Saturday and Sunday are identical. Choose whichever suits you best.

What do I need to do now?

Go ahead and reserve your spot! We can't wait to see you!

What if I change my mind about attending?

Get in touch for a refund up to 31 July 2024. A deduction of £10 will be made from the amount as a handling and processing fee to reflect our costs. Unfortunately, no refund is available after July.

Why do I have to pay The Novel Guys Ltd.?

GSI Events has two parent companies, Your DNA Guide in the U.S. and The Novel Guys in the U.K. Each handles the processing for the other in the two territories. Please do get in touch if you are confused by this -

Frequently Asked Questions - GSI: Sawtooth

What's it all about?!

The event is based on Nathan Dylan Goodwin's book, The Sawtooth Slayer. You will be guided through an on-demand presentation with Diahan Southard and Nathan Dylan Goodwin, completing a workbook as you go in your own time. The presentation includes snippets of DNA teaching and the methodology used in investigative genetic genealogy in order to solve a serial murder. You will be using online records (within this website) to help you and hopefully you will have lots of fun as you work to identify the serial killer!

When is the event?

It is on-demand, so you can work through it at your own pace in your own time. There are no live elements.

Is it the same as the in-person event that ran in Salt Lake City in March 2023 and the live virtual event in August 2023?

Although there have been some changes, the content is the same as both of these events. You might want to consider this on-demand option if you wanted to have another go or in case you missed any part of it.

Do I need to be an expert in genetic genealogy?

No! This has been designed for all levels of experience with genetic genealogy. 

Do I need subscriptions to the major genealogy websites, such as Ancestry, MyHeritage and GenealogyBank?

No, everything you need is right here on this website! You will guided through the process with videos from Nathan and Diahan, mixed in with simulations of real-world genealogy websites. You will only need access to this website and your workbook (digital or print). 

How long will it take me to complete?

The in-person and live virtual events lasted around 3 hours, however, you might want to complete it over several hours or days. You work at your own pace to your own schedule. You have access to the product for 8 weeks from purchase.

What do I need to do first?

Log in to your profile (top right) and take a look at the case you will be trying to solve. You will find details of the team, the case and the victims. If you wish, you can add details to your profile page, but it isn't required in order to take part.

How will I get my workbook?

A PDF version of your workbook has been posted to your profile page under 'Case Notes Workbook'. You can choose a digital version, which you can type into as you go or a printed version, which you can print and write in as you go.

What if I change my mind and want a refund?

This product is non-refundable, as the materials are instantly made available in your personal profile area of the GSI Events website.

GSI: Superstition Mountains, London (additional information)

Following on from the success of GSI: Superstition Mountains in Salt Lake City this year, we are super excited to bring the in-person, fun and interactive event to London! 

Having received some lectures from Diahan and Nathan and taken part in a DNA workshop, you will be tasked with solving a triple murder from the 1970s using real investigative genetic genealogy techniques. The event will take around three hours to complete with live instruction and help from Diahan and Nathan (and your table friends!), using realistic documents and records in a fun and entertaining way. 

Below you can see a selection of photos from the Salt Lake City event.

GSI: Superstition Mountains, SLC

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