Originally Posted by interracialtoons

Go to the police and make a report of credit card theft.
In the report mention the thing about the detective.
Ask to speak with the detective and explain what happened.
He will surely believe you and thank you for comming in.

They want to get the right guy, not you.
Just be friendly and say you're sorry that this also happened to him and you hope this person is caught real soon. Also make yourslef available to testify if the guy is caught. They like that!!