I'm of the firm belief that Palantir has a side business of solving old "have you seen this person" Crimestoppers cases.
Everybody thinks about palantir from a "forward arrow of time" standpoint (ie, a crime is committed on surveillance camera, and so the police start looking for them to show up again), but I was watching a doc about Palantir's AI facial recognition system today, and how it can compensate for aging.
After I watched that, I'm very much of the opinion now that all of those old "have you seen this person" Crimestoppers-type photos and sketches and photos should be within their ability to solve, at least probably going back to 2000 or so.
I haven't looked into it yet, but I'm planning to do that with the rest of my weekend. If we see a spike of those cases "solved," like we started seeing cases "solved" after ancestral DNA databases were widely accepted by the public, I'd wager they have a profitable little side business going on by plugging in current identification of random people, and asking if they've ever been sought in a crime...
It needs a little polish, but I think i'm making myself clear enough.