The Christmas Spirit, Part Two - S2-E10
Corrected entry: Thor can see the ghosts while possessing Sam when Hettie couldn't while possessing Jay.
Corrected entry: When Sam and Jay leave the room after queuing up The Horse Whisperer for Trevor's folks to watch, Hedy, Flower, and Trevor step back to let them by, though they are ghosts and Sam and Jay could have simply walked right through them.
Correction: This isn't a mistake. Some ghosts generally do not like how it feels when people walk through them. And they also affect people who do walk through them, such as Flower making people high. The ghosts intentionally avoid people walking through them, unless they're being devilish like Hetty's husband Elias.
Halloween 2: The Ghost of Hetty's Past - S2-E5
Corrected entry: Flower is able to close a door but only Trevor has the ability to manipulate solid objects; all the other ghosts pass through them.
Correction: You should watch the show more to understand what happened. Flower closed The Vault door. The Vault was made of material that ghosts can not go through, which is how Elias was trapped in there as a ghost. Ghosts basically bounce off The Vault material, so the door closed when it was pushed.
Farnsby & B - S1-E18
Corrected entry: Alberta asks Sam to keep looking for evidence that she was murdered, but that was answered in episode 9 when Alberta's Fan discovered the poisoned moonshine in her bag.
Correction: Alberta wasn't asking for Sam to keep looking for evidence she was murdered, she wanted Sam to keep working on solving her murder. They knew she was murdered, but they didn't know who did it.
Corrected entry: It's established the ghosts can pass through walls, doors, etc. but Hetty's husband's ghost was trapped in a vault for 130 years until the door was finally opened.
Corrected entry: Hetty loses her British accent on occasion and sounds slightly Midwestern.
Correction: Hetty isn't British and never has a British accent.
Hetty is of proper English upbringing as a late baroness with a very proper slight British 'lilt' since the show's inception. That wouldn't change in the precipice unless she was narratively merging to a more midwestern-y dialect around her ghost friends in time. Being Isaac and Thor's lilts have not changed a bit.
Correction: Except that Jay can't see ghosts and Sam can, so there's no plot hole.
Bishop73