Given I've never had a criminal charge, take with a grain of salt. I've always been polite and engaging for all civil infractions (like speeding tickets), howev

Given I've never had a criminal charge, take with a grain of salt. I've always been polite and engaging for all civil infractions (like speeding tickets), however, if I think they are moving towards a criminal charge, I'd invoke my 5th and would cooperate as required, but no further.