Donut Shop

It's Saturday night, but to Tom Phillips, the manager at this all night Donut Shop, it's just another day on the job, serving customers, cleaning up unknown substances from the floor, and protecting the shop from various robbers and vagrants. Seems normal enough, but what are the strange noises coming from the back room? Why don't the regular customers seem to notice them? And how come the customers can't seem to stop eating the donuts?