I discovered my graduate advisor has been plagiarizing ideas from students for decades and I have documentation but exposing this will destroy not just him but everyone whose careers he's advanced including me.
More people experience this than they realize.
You can prove your advisor stole from students, but exposing him would wreck a lot of careers, including yours.
“Where Are You with Science — Physical & Social Sciences?”
If this sounds familiar, the Library can help you find the bigger picture.