For some clue to Parker's approach to his anti-heroic anti-hero, one should re-read the clever first line in "Red Light's" prologue, "You might not have liked Aubrey Whittaker." This throwaway line, referring here to the victim, applies just as well to Merci Rayborn, our anti-heroine. I think Parker is saying as much.
As to the purported "boo-boo" concerning fingerprints, suffice to say that a closer reading would reveal that this is not an error at all. OF COURSE the fingerprints belonged to the perpetrator; it is their interpretation which is at issue. It appears that the dissatisfied reader has not followed Parker's argument closely enough to understand that there is absolutely no slip here.
So, I recommend "Red Light" highly for those who value authentic characters struggling to know themselves, even when the selves they find are not what they had hoped to find. For the Pollyannas in the group, try the Bobbsie Twins.
I had problems with Merci. I can take a central character that I totally detest; what is unsettling is one who continually annoys me. Merci has to be one of the most self-centered creations around. She wreaks havoc because she has to be "true" to herself, yet never seems to question whether her "truth" is somewhat bloody-minded. I understand that some types of women rarely have girl-friends; what I fail to understand is how Merci has any boy-friends either. This is not a failing of the book; Mr. Parker does his work too well. I know Merci better than I want to.
The book should have been edited; it was far too long with meandering drives and non-clues. There were too many places where one of the characters would say, "Call me right away! Important news!" And it wasn't important and it wasn't news. Then there was the confrontation with the murderer. Does he or she do away with Merci in an expedient manner as any sensible predator would? No. He or she talks and talks to explain motivations and cleverness. This is a very stale and clunky device, and I am surprised Mr. Parker used it.
The flaws notwithstanding, Mr. Parker is a fine writer. I look forward to his next book. Maybe Merci will take a well-deserved rest, and it won't be such a lengthy outing.