It seems you could get many stories out of this! You could have one about a vampire just stuggling to be normal (quite a witty story I would think, it's a great idea), or a story about the retaliation and consequences he would face from killing someone...or the final one about his old sire turning up! I think all three ideas could possibly have enough for whole books!
However, I do agree that the this basic premise does sound good. I'm sorry I can't be of more help, but I hope you make a go of this because I think it would make an interesting read! I love vampires.
