I don’t know why anyone would have a “secret code” or “secret word” plan unless someone is stalking them or they are a victim of abuse or maybe someone who is under a Federal Protective Witness Program.
I am wondering now if someone had been stalking Amy or had threatened to hurt her in the past. There may even be a possibility that because of her friendship with Tonya Howarth, Junior Beebe had threaten her.
Even James has said that Amy was afraid to open the door. I think there is a lot more to this story that we will find out.