I'm convinced there is a secret perv cam in this business how could I prove it?

i don't have any evidence one exists but my gut feeling is there has to be one. the business is owned by one of the most ultra creepy and female obsessed man i have ever encountered in life. he specifically only hires white women 18-30 to work there and refuses to hire any one else and these girls all have exceptionally good bodies , often great boobs. but he doesn't force them to wear sexy uniforms oddly no yoga pants or clevage revealing tops just blue jeans and t shirts , shorts in the summer

i've heard stories about him visiting other similar businesses and how he talks to specific women who work at them and tells them about how he owns a business and then he leaves them huge tips. and this story was told to me by a girl who was in her 20's and very good looking but he is like in his 50's or 60's by now

and he also has a creepy page on social media , no pictures of himself at all and he is following pervy hot girl pages on social media

the business has 3 security camera's that are publically visible that seem all focused in the direction of where the girls normally work as thats where cash registered located.

but is no way there is not a secret perv cam in there somewhere , there has to be one somewhere , what i read online its most likely location is washroom and it could be hidden in a smoke detector , electrical box or wall decor but i can't go in the girls washroom to look for it

Updates
11 mo
checked unisex washrooms and didn't find anything that appeared to be a camera , one does have an old inactive light of some sort which is odd but doesn't appear to be anything. but does appear he has the 3 known camera's intentionally pointed in the direction of people walking to the washroom so perhaps he's checking out there clevage or bod as they walk by
I'm convinced there is a secret perv cam in this business how could I prove it?
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