Wat would cause the car to die suddenly and not restart?

It is the 4.7 v8, and it had been verified to have fuel to the rail and spark to the plug. Checked fuses as well nothing blown. Very strange as the motor barely has 8,000 miles on the rebuild.

Fuel "to the rail" -next question on that would be , what is the pressure and does it have injector pulse? --"spark at the plug" -at correct time? Valve timing verified? (kinda assumed that before , sorry.

Thanks for your reply, we figured it out. It was the cam shaft position sensor.