find out. >> reporter: finally, at daybreak, mark twitchell let clark know he'd had enough. >> am i being charged? >> not yet. >> am i free to go? >> yep. >> then i will. >> okay. >> and then as bill clark escorted mark twitchell out of the building and into the early morning dark, he upped the ante a little. told twitchell he was seizing his car. >> and then it's like whoa. almost stopped. >> reporter: yeah. >> kind of pulled back. he goes, well, i need to get something out of it. i says, you're getting nothing. i'm taking that car. >> reporter: and it was then as clark approached twitchell's car to take it to the impound yard, that he noticed mark's unusual license plate personalized. dark jedi.