void main()
{
  if (GetIsPC(GetEnteringObject() ))
  {
  SendMessageToPC( GetEnteringObject(), "You sense that you are being watched.");
  DestroyObject(GetObjectByTag("DI1"));
  object npc = GetNearestObjectByTag("GarethIH");
  AssignCommand(npc,SpeakString("I have a bad feeling..."));
  }
}