Naked City (1958)

S03E03 The Corpse Ran Down Mulberry Street

Following a collision between a truck and a hearse, what appeared to be a lifeless body suddenly rises and walks off. The casket that was involved in the accident was actually a "submarine," cleverly designed for smuggling an undocumented immigrant into the United States. The Undertaker, who was expecting the delivery, was unaware that his "fixer" associate had a different, illicit cargo hidden within the same shipment.