on the case

on the case

1. Working diligently on a particular task. Our team of engineers is on the case to fix the issue, and we thank you for your continued patience with the matter.
2. Investigating something. When my youngest child thinks her older brother is doing something suspicious, she is always on the case—she's the best spy I could have asked for! Something went wrong with the engine, so I put my trusty mechanic on the case.
See also: case, on
References in classic literature ?
His personal opinion upon things in general, and upon me, has no bearing on the case whatever.
For additional information on the case settlement, go to the United States Patent and Trademark Office website at http://www.