have a case

have a case (against someone or something)

To possess a significant amount of incriminating evidence (against someone or something), as could be presented in court. With her testimony, now we really have a case. My lawyer says we have a case against our landlord.
See also: case, have, someone
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have a case (against someone)

to have much evidence that can be used against someone in court. Do the police have a case against John? No, they don't have a case.
See also: case, have
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
TWO detectives have a case to answer for misconduct in the case of Lostprophets singer Ian Watkins, a watchdog has said.
But the inquiry recommended two detectives have a case to answer for misconduct for not complying with force policy on recording decision-making and not pursuing all reasonable lines of inquiry.