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Pia Koresh is a character appearing in Loch Henry. She is portrayed by Myha'la Herrold.


Pia and her boyfriend, Davis, traveled to Davis's hometown of Loch Henry, Scotland, to make a documentary about a man who protected rare eggs from being stolen. When they arrived at Davis's mother's home, where they were staying for two nights before continuing on their journey, Pia butted head with Janet when she implied that the cops would care about the egg thefts if a Black person were the one stealing them. Janet defended the police, saying they were probably just overworked. Pia privately told Davis that she worried she'd stuck her foot in her mouth as she'd just learned that Davis's late father, Kenneth, was a police officer.

While they were in town, Davis took Pia to The Lochside Inn, which was operated by his friend, Stuart King. Stuart said that business was so bad that he'd told his father they would have to pack it in if things didn't pick up. Pia was confused because Loch Henry was so picturesque. So Stuart told the story of Dawn and Simon Challis, a newlywed couple who disappeared on their honeymoon and were later found to have been murdered by Iain Adair, who then murdered his parents and shot Kenneth, who died of the infection he contracted as a result. Pia immediately asked to go see where it happened.

They went to the Adair house, which as boarded up. Pia decided it was perfect and asked Davis to do their documentary about the case instead. She believed they could really generate interest and get financial backing. Davis was reluctant, but agreed to do it with Stuart's encouragement. Stuart also gave them a box of his mom's things, saying she'd collected everything she could find about the case.

They used what they got from Stuart's mom, along with their own footage, which they recorded on Kenneth's old video camera over the many tapes he and Janet had recorded of the show Bergerac. When Janet learned what they were working on, she agreed to be recorded answering questions about the case. She also gave them her support, saying that everyone should know what happened to Kenneth.

Pia and Davis pitched their documentary to Kate Cezar, a producer for Historik. She liked the case, but challenged them to find a new angle, something to draw people in. Pia lied and said they had access to the Adair house, including the torture room, which Kate liked.

Wanting to make good on their promise, Stuart, Pia, and Davis put on full-body jumpsuits and went to the Adair house, where they broke in to film inside. They found a large amount of blood when they used a black light in the space, highlighting the gruesome nature of the crimes. On their way back, they were in an accident when they crashed into Richard, Stuart's father. Pia and Stuart had minor injuries, but Davis had to stay overnight, so Janet took Pia and Stuart home.

Janet decided to make shepherd's pie while Pia worked on digitizing the footage they'd taken. While the footage played, Pia stretched. Finally, the new footage ran out and the tape switched to Bergerac briefly before cutting off and showing Iain Adair, then Kenneth and Janet, torturing the Challises, revealing that they were the true masterminds behind the crimes. Pia quickly hid this when Janet came to get her for dinner. Pia was quiet while they ate and then excused herself to go for a walk, wanting to try to get a phone signal to call Davis.

While she was walking, Janet came by in her car and tried to get Pia to come back with her. Pia took off running and ended up falling and hitting her head on a rock while crossing a stream. Then she got pulled under the water and swept away.

Davis ended up finishing the documentary with her, telling the true story of what happened in Loch Henry, helped by his mother leaving evidence of their crimes before hanging herself.


She was dating Davis McCardle until her death.

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