Police are searching for a couple that ate at the Coram Diner last month and left without paying the $80 bill.
Surveillance video shows a diner employee chasing them into the parking lot.
Police say the employee tried to stop the couple, even holding on to the hood of their moving car, but he fell off. The employee suffered minor injuries.
Anyone with information can call Suffolk Crime Stoppers at 1-800-220-TIPS.