"Return the Slab"

When a pair of thieves, being pursued by the heat, are forced to hide their mysterious haul, they choose to bury it beside a water pump, intent on coming back for it when it's safe. Before they can leave, however, they are confronted by a mysterious being who demands that they return it or 'suffer his curse'. When the two thieves demand to know what curse, their car is beset by a swarm of locusts. The camera then pans away to reveal that this is happening outside the Baggs' household, and when it pans back, there is no sign of the thieves or their car as the police helicopter passes by.

Example of:
Curse of the Pharaoh