Two men wearing full-length dresses entered a burger joint in Swampoodle during lunchtime one day last month.
Within seconds, a video shows, they pulled guns from their handbags and began shooting, leaving one restaurant employee dead and another injured.
Philadelphia police on Tuesday released the surveillance tape, seeking help in identifying the men.
Aaron Jones, 23, of the 3100 block of Rosewood Street, was killed at 1:19 p.m. Oct. 22 at Burger Lane, 2805 N. 22nd St., police said. A 16-year-old employee, whom police did not identify, was injured when he was shot in a leg.
Authorities said only that the shooters were "dressed in female garb with head coverings," and that they fled the restaurant in a green Buick Park Avenue, last seen traveling west on Cambria Street.
Surveillance video shows the men entering a hallway of the restaurant where other people were standing. The first shooter pulls a handgun from a plastic bag and reaches through a window to fire.
After he runs away, the second shooter - who appears to be wearing a bonnet - belatedly pulls a gun from a handbag and fires more haphazardly, the video shows.
The men then quickly run out the front door.
Information can be given to the Homicide Unit at 215-686-3334.