I need help in Oblivion?

I am a very bad person and will often break the law and go on mive killing sprees. These are often in the Imperial City Marketplace. You obviosly know that citizens andshopkeepers will run out to join the fight. I can't tell who I'm killing, I just keep shooting. I guess in the frenzy I killed a couple shopkeepers. Now when ever I go into a few shops, no none's there. My guess is that I killed them Will they ever respawn/get replaced and if so, how?