Brent Radford

Warning: big plot spoilers ahead, you have been warned!

Brent Radford was an older private investigator, hired by David Sarif. Radford's job was to dig deep into the past of Adam Jensen and uncover his secrets, since Sarrif suspected there is something odd about Jensen himself. Radford was the private eye for which Sarrif himself made the hole into his company's firewall. When Jensen finally finds him, Radford is mortally wounded but gives enough glimpses to Jensen already, that there's something fishy about his past with the hint of a storage unit where all his discoveries are being mothballed.

Radford worked well on his job and was way too succesful for his own good. First he checked the report of the SWAT-team in which Jensen worked before he was fired, and Radford suspected that some pissed off superior manipulated it to get Jensen fired out of SWAT, since all former colleagues still talked with utter respect about Jensen and nothing else. Later he found out that the Illuminate were closely monitoring Jensens progress, and though Radford himself was still not buying that, he hinted to Jensen that his own past was being so scary that it made even Sarif himself, one of the mightiest man in the world, just want to look away from it. Radford hints, that there's been some kind of fire and the Jensens are not his real parents at all.

Radford also hinted that there's one woman named Michelle, which played a crucial role in Jensen's own survival, his "guardian angel" and that he owes her at least so much for still being alive, that he should look over her well being.

After Radford dies Jensen investigates further and finds the information Radford at the place he hinted it being at, reading some emails. The first mail is a report from Radford to Sarif about the psych evulation of Jensen, which caused him being fired out of SWAT. The second email is one to Megan Reed, talking about a very unusual DNA sample of a human being which stands at least one step ahead of the rest of the human genome, maybe two. The writer suspects that he does not know however if this mutation happened natural or was being done to the child in vitro, though the mother had no such mutations.

The third email reveals that Jensens parents can't be his real parents, since his mother was being sterile. The fourth email mentions Jensens father being employed after his military career at some company named White Helix, and that Adam's mother was being seen unfit for adoption. They tried for years to get an adopted child without success and like a miracle then they have got five year old Adam as a healthy child with no records at all how he was getting there. The mentioning of White Helix, a subsidiary of Versalife, alone made Sarif backing out of all.