Ok, fine. Then don't hire them in the first place. Isn't that what a job interview is for?
In a couple of hours interview it is impossible to flush out all thoughts residing in one’s brain. If it was so, no employee would ever get fired since every one had an interview before and presented a detailed resume.
Only after an employee is hired, it becomes known after several months if it was a mistake. Good executives will admit the mistake and take action.