The phrase "person case" refers to a legal situation where a person's rights or treatment is being decided upon by a court. It involves a specific individual's circumstance that the court needs to make a ruling or decision about. Full definition
What starts out as a by - the - book missing persons case turns into a case that no one could have ever imagined. (nerdlocker.com)
They are incredible search and rescue dogs and extremely helpful with missing person cases. (shepped.com)
It's appetizing and potentially subversive: an unraveling missing person case in which the only motivators are the suburban standbys of childbearing, real estate, and the wandering eye, and the heroine is a baby - snatching stalker ex who sucks vodka out of a water bottle. (film.avclub.com)