It would take more than a single scream to get the police out there. And you would have to have one nosy and pretty stupid neighbor. You don't have to let the police into your house on such a flimsy pretense. What they might do then though is debatable.

Down south recently there was the boy that was kidnapped by the pizza guy and then another boy. The first boy was raped and tortured repeatedly, crying and screaming bloody murder. This was in a cheap apartment building. The neighbors heard it all and NOBODY called the police.