The final outcome-SPOILER
The doctor reads in the book how to kill Dracula and simply gives Billy a scalpel saying that a spike has to be driven into his heart. However, the spike has to be made of wood not metal. Then again, the gun to the face did hurt Drac. But they should have stuck with that point of the legend. (However, in Stoker's novel, Dracula is killed with three large, ordinary knives. So I guess we can draw our own conclusions.)
"I'm in such bad shape, I'm wearing prescription underwear." Phyllis Diller 1917-2012