If you're smart, pretty much all of it.
Of course, working alone doesn't get you any form of support from a team, nor does it grant you any sort of legal immunity in case of a fuckup, nor are you treated with the same respect of an actual law enforcement professional. Your evidence has a suspicious eye cast on it, your witnesses could easily be bullied, and your artifacts could easily be faked. And if you fuck up, nobody will come to the rescue.
Jael, this Nancy Drew thing might be fun for a while, and it's cool to try on the detective hat, but
actual criminal investigators have the benefit of
actual training,
actual facilities, and an
actual team. I'd still advise you to look in to the government sector. It can be awfully rewarding.
_________________________
A modern day warrior, mean, mean stride,
today's Tom Sawyer, mean, mean pride.
No, his mind is not for rent, to any god or government.
Always hopeful, yet discontent, he knows changes aren't permanent.
But change is.