Not really, but from the ten seconds of preview I saw, I got the impression they were going to go for more of a haunted "can't forget gruesome scenes even after case solved" rather than just "oh yes, I remember exactly where the knife was so Bob couldn't have donr it"
Plus it's a weak premise to base a character on when it's unnecessary and adds nothing to the story. So what if she recalls everything in minute detail? It's nothing more than a personality filler in the absence of plot and characterisation. If they're going to make a cop show, then make it a good one, don't rely on lame gimmicks to draw in your audience.