At the end of this episode it's implied (via the forehead scar) pretty hard that Autumn and Amy are the same person somehow. Probably having to do with the time travel hole. But Amy's scar, at child age, is directly above her left eye and Autumn's scar is at her left temple area.
When Luke is digging for and finds the "mystery hole" you see an overhead shot showing his arm rising out of the hole. But then the next shot shows him in the hole rising his body and arms towards the top of the hole.
Royal makes a "speech" in the beginning part of which stating "When I watched that stray buckshot go into his chest". At the end of the episode he makes the same speech but this time he says "When I watched that stray bullet go into his chest".