Guidestones is based on true events.

The names of those involved have been changed to protect their identities.

From director Jay Ferguson:

[The series is a] perfect hybrid of the fiction and doc work I have been doing all along and allows me to kind of replicate the hunt that Sandy went on. We took Sandy’s story and tried to remain as true to the spirit of the thing, but of course took many creative liberties and changed all the names. I think that what we have created is as close as you can come to retelling an event while still keeping the principals involved safe and have it be an entertaining story – there’s a lot more downtime in real life.