run fast
It depends on the circumstances. You can call the cops, try to attack him, scream for help, kick him in the crotch or just anything you can do to escape really. If he locks you in a basement do not...
you would not get into any trouble - the thief would be the one to get into trouble.
whats french island
You would send a thief to catch a thief, because a thief would know where a thief would go or what he might do to avoid detection.