No spark

What is your question?

I've only had the car a short time. I test drove it, drove it home (approx. 40 miles), parked it. The next morning it wouldn't start. The engine cranks but won't start. I check for spark by removing the plugs. Nothing. So far, I've replace the distributor, wires, spark plugs, and the fuel pump. Does anybody have any suggestions? Thanks for your help!!