Supers could be hugely helpful.
https://en.wikipedia.org/wiki/Sherlock_Holmes
Not so much the supers with prehensile hair or the ones who can turn into laser beams. You want the really smart ones. The Sherlock Holmes stories are great (really great!) examples of how a superhuman intellect can perceive patterns that others cannot perceive, make connections, and solve crimes. This would especially be helpful with white collar crimes where law enforcement must have a large fund of knowledge, understand how the endeavor in question is supposed to work, know what questions to ask and how to ask them, and so on.
I get the impression that in law enforcement, a little brainpower can go a really long way. Or maybe that is because so many cop shows feature super insightful and perceptive cops. There are also some real life cops with super powers! https://www.newyorker.com/magazine/2016/08/22/londons-super-recognizer-police-force