have someone bang to rights

have (one) bang to rights

To have evidence to definitively prove that one is guilty of a crime or other misdeed. Thanks to footage from the security cameras, the police had the burglars bang to rights.
See also: bang, have, right
Farlex Dictionary of Idioms.

have someone bang to rights

or

catch someone bang to rights

BRITISH, INFORMAL
If you have someone bang to rights or catch someone bang to rights, you have enough evidence against them to accuse them of a crime and to prove that they are guilty. You've got your man — got him bang to rights — evidence, witnesses, the lot. There's no getting out if it — they've been caught bang to rights. Note: In American English you have or catch someone dead to rights. How do you intend to proceed in the Rafaelli case? I mean, you have him pretty well dead to rights.
See also: bang, have, right, someone
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • have (one) bang to rights
  • catch (one) bang to rights
  • catch (one) dead to rights
  • have (one) dead to rights
  • have dead to rights
  • have someone dead to rights
  • dead to rights
  • bang dead to rights
  • be in the clear
  • in the clear