An individual who is fixated on bringing not existent problems to light.
Someone who is a crime-buster will claim that they’re speaking the “truth” or exposing something for what it really is, despite having no reason to be investigating the topic matter.
Darryl: I can’t use my phone for 3 days now because my roommate Kaden tried guessing my password so he could monitor my social medias.
Dawson: Well, that’s what you get from rooming with a crime-buster.