Also, if your placing a NPC near mobs you can make the NPC appear dead like it is laying on the ground and then after killing the mobs and talking to the NPC, it can get up.
You can walk to the invis wall but cannot pass unless you make the invis wall interactable and have it disappear after a event occurs or after dialog. You can make the invis walls disappear after killing the mobs around the NPC.
Comments
Actually, to be fair I too would like to know this for future reference.
A NPC laying on the ground will not be attacked.
So evil-doers do have morals and standards!
Ya, even when you are down or dead, the evil-doers will not violate your corpse.
At least in Neverwinter they won't.