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Phrase(s): *the goods on someone
something potentially damaging or embarrassing about someone. (*Typically: get ~; have ~; give someone ~.) • John beat me unfairly in tennis, but I’ll get even. I’ll get the goods on him and his cheating. • The authorities are going to get the goods on Mr. Smith. He has been selling worthless land again.
McGrawhill's American Idioms And Phrasal Verbs