You need to be more careful with your word choice, because that doesn't make any sense.
Turn over == "crank"
I'm guessing you mean fire where you meant crank? And what is a "stuttering crank"? Do you mean that it's running, but is missing?
What do you mean? "Turn over" simply means that the crankshaft is rotating. It doesn't mean that the engine fires, starts, or runs. So are you saying that the engine cracked but wouldn't start, or are you saying that the engine wouldn't even crank?
Was your AC on when this happened?