A review by redhead_reader
The Forever Witness: How Genetic Genealogy Solved a Cold Case Double Murder by Edward Humes

challenging dark informative mysterious tense medium-paced

5.0

This was such a fascinating read. I learned so much about genetic genealogy and about the various advancements in technology that have occurred over the years to bring us to the point where DNA samples shared by family members, even distant relations like cousins, to genealogy companies can lead to the finding, arrest, and conviction of criminals. 
It’s such an interesting subset of forensics and the author does a great job explaining the nuances in lay men’s terms along with posing the following topics to the reader 1) the moral dilemma that has surrounded genetic genealogy being used by law enforcement and 2) the risks of people sending their DNA in to private companies. 
A very thought provoking read.

A must read for fans of true crime, as it focuses on how genetic genealogy was used to solve a 30 year cold case, and for anyone that is interested in forensics and genealogical technology. 

Thank you to NetGalley and Penguin Group Dutton for the copy of this eARC.