Can a company cause you of stealing money, if they have no proof?

I work at Penn Station east coast subs. And today my employer asked me if I took money. I calmly said no, as I know I did not take it. So I'm just wondering if they can prosecute me just on here say. They have cameras. And I'm am confident, because I know the footage should clear things up. But I'm just wondering. If they accuse me, can I damand to see the footage? And if things get taken even further, can I take them to court, and damand them to show the footage to the judge? I know there is no footage of me taking money. Can I use that to my advantage? Like, "you can't prosecute me, unless you show this court this footage. The reason I ask, is because I'm new, and I think one of the assistant managers is trying to pull a fast one. And blame it on the new guy. So I need to know if I can demand footage, because they will take her word over mine.