Read the following scenario and answer the question in $510$ sentences.

Betty was a bookkeeper employed at a pet store. On January $2,2014$ Betty prepared a check drawn on the pet store's account in the amount of $$500$ made payable to John Bird. She brought the check to the store manager and stated that the check was for payment for last month's bird seed. However, Betty knew that the store had already paid for last month's bird seed. The manager signed the check and asked that Betty place it in the mail. Instead of placing the check in the mail, Betty brought home the check and placed it on her bookshelf. Betty's friend, Larry, stopped by Betty's house while she was away. Larry saw the check lying on the shelf and remembered that Betty owed him $$500.$ Larry grabbed the check, signed an endorsement in John Bird's name, and cashed it at John's regular bank. Three months later, the pet store manager noticed the double payment for bird seed. How would you try to get the money back if you were the manager?