What is another word for are on case?
Pronunciation: [ɑːɹ ˌɒn kˈe͡ɪs] (IPA) 
Are on case is an idiomatic expression that refers to someone who is actively investigating or attempting to solve a problem or mystery. Synonyms for this phrase include "are investigating," "are pursuing," "are working on," "are deciphering," "are delving into," and "are exploring." All of these phrases convey a sense of dedicated effort and focus towards a task, whether it be solving a crime, uncovering a conspiracy, or figuring out a complex problem. Regardless of the words used, the message remains the same: someone is actively engaged in the pursuit of a solution.
