OK, a casing left behind means it's an automatic pistol. Don't know many people who have a .32 caliber, so it is probably a .40 caliber or 9mm. Even the .32 will punch a hole in two layers of drywall. It won't have a lot of energy left, but could still do damage. A .40 or 9mm slug will kill you outright if it hits anything vital, even after passing through two layers of drywall.
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.