I was watching a TV show in which they showed this two friends who were hiding in disguise to escape from bounty hunters. Then one friend upon realizing that the bounty hunters have recognized them says to the other "We have been made.".
I can understand the meaning of this phrase from the context but I would like to know more about its usage. Being a non-native speaker i find this phrase quite odd and elegant at the same time. Is this a common phrase used in that context? Is this considered proper English or a slang? Is it considered American English?