Nont Sarah's, on bleak moorland near Buckstones, was used for the interior and exterior pub scenes where policeman Rob Fairholme goes for a drink.
Earlier this year, Jan Booth, who recently took over the pub, told us Mark Addy, who plays Rob, spent time filming there. She said: "They couldn’t resist the beautiful sweeping windows for one of Mark’s scenes.
“They spent half a day with us.”
The former pub has long had a reputation as a hotbed of paranormal activity, and after Jan reopened the pub as a community hub in January, psychic club meetings have been held there.
Jan says the spirit of a mischievous little girl haunts the building, and untied her left shoelace several times as she worked at the computer.
See pictures from episode three, to be aired on Sunday night, below.