have something on

have something on  {v. phr.},  {informal}

Располагать информацией или доказательством чьего-либо проступка.

Mr. Jones didn't want to run for office because he knew the opponents had something on him.

Mr. Smith keeps paying blackmail to a man who has something on him.

Although Miss Brown is not a good worker, her boss does not fire her because she has something on him.

Ср.: GET THE GOODS ON. Прот.: HAVE NOTHING ON.