In this episode, the team travels to Rhydymwyn Valley Works, a mysterious and historically significant location in Wales. Once used for top-secret wartime projects, this sprawling area is now abandoned and rumored to be haunted. Before the official investigation even begins, strange activity is already stirring. As the team splits into two groups, using different filming techniques—Paul and Jane with full color, and Sean and Bex in infrared night vision—they quickly find themselves surrounded by paranormal energy. What dark secrets lie buried in this forgotten valley?

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S8 · E4Free on YouTube Rhydymwyn, North WalesRhydymwyn Valley Works - Unseen ForcesThe investigation at Rhydymwyn Valley Works intensifies in Episode 4 as Sean, Bex and Paul, and the team continue to experience eerie encounters. Paul and Jane capture a ghostly voice on camera, while Sean senses a presence and hears unexplained footsteps. With the vast site proving to be a hotbed of paranormal activity, the team uses advanced equipment to dig deeper. Could the spirits of those connected to the site’s wartime past be trying to communicate, or is there something even more sinister at play? S8 · E5Free on YouTube Rhydymwyn, North WalesRhydymwyn Valley Works - Shadows and WhispersThe investigation at Rhydymwyn Valley Works takes a chilling turn in Episode 5. Paul and Jane catch eerie responses through the spirit box, while Sean and Bex sense that something is watching from the shadows. The sound of marching echoes through the halls, possibly from soldiers who once guarded this place. When a strange voice is caught on camera, the team begins to wonder: Are the spirits of the past trying to reveal their hidden stories, or is there something even more unsettling in the darkness? With more areas left to explore, the paranormal encounters intensify. S8 · E6Free on YouTube Rhydymwyn, North WalesEchoes of the Past – Rhydymwyn Valley WorksIn the final episode, the team continues their investigation of Rhydymwyn Valley Works, where paranormal activity reaches new heights. As they capture eerie voices and mysterious figures, a chilling voice is heard saying, "I’m alone." Could this be the spirit tied to the site's wartime past, or is something darker lurking in the shadows?