Well I hope jdavis isn't your real name or you might be in trouble anyway!
We all watch American and English TV Cop programmes and there's a privacy issue.
You have to disclose this to your solicitor, but, in for a penny in for a pount - I don't think a single taped instance is credible.
It could be argued that you set him up for that particualr occasion, couldn't it?
I'd be more believing if I saw several instances with several different people in the background whom you could call on to corroborate your allegations.
This isn't an approval of secret filming BTW, but you should take legal advice on it - there may be a means to show it or undertake legal surveillance of the subject if its repeatable.
If this happened at work, for example, there may in fact be a way for you to have such surveillance undertaken legally by your employer, who may have a duty to prevent bullying in the workplace.
FWIW
ONQ.