Reeling from Rosa’s account of being woken by a bright light and seeing creatures', Sian heads to Rosa’s hilltop hotel, where she claimed they 'landed' to find her.

There is an unnerving breakthrough in Sian’s investigation into a woman who claimed to summon spirits of the dead when she finds an audio recording of a Helen Duncan seance. Not only is a gravelly male 'spirit' heard to speak, but the people gathered comment that they see and recognise him. How is this possible? Sian tests out different theories – was it someone else speaking? Helen putting on voices? Did she have accomplices? How does that explain someone recognising a dead relative? Searching for answers and hoping to understand how Helen was convincing people they were communicating with their dead loved ones, Sian tracks down a modern-day medium. He claims to commune with the other side, but a seance in Edinburgh leaves Sian with more questions than she first started with. And Helen’s claims to be able to manifest the physical dead also take things to another level to what she has just experienced.

Radio 1 Presenter Sian Eleri investigates the story of Scottish medium Helen Duncan, who in 1944 became the last person convicted and imprisoned under the Witchcraft Act. As the Blitz rained down on London, Helen went on trail at the Old Bailey in a case that would make headlines around the world. Revered by her supporters, who believed she had the power to bring back spirits of the dead, Helen became the most notorious medium in history, and people flocked to have seances with her. Sian begins by tracking down former criminal lawyer Graham Hewitt, who is fighting to pardon Helen on behalf of her surviving family members. Sian discovers it was actually fraud for which Helen was put in prison using witchcraft law, but Graham highlights what he believes is inexplicable evidence from her trial that proves otherwise.

Radio 1 presenter Sian Eleri investigates a seemingly ordinary farmhouse in north Wales, which, in the late 1990s, was widely considered the most haunted house in Britain. The story made local and national headlines as the family who lived at the farm became ever more desperate in their search for answers. More than 300 allegedly paranormal events were documented at the Flintshire farmhouse in video footage, audio interviews, photos and eyewitness accounts – all of which has been locked away until now.

Sian is frustrated that she still hasn’t been able to contact the Gower family who lived at the farmhouse – David, a former headmaster, his wife Rose-Mary and their son John-Paul. But there is a breakthrough of another kind when the current owner of Penyffordd Farm gets in touch and invites her over to see the house she’s heard so much about.

Sian Eleri’s investigation into the haunting of Penyffordd Farm continues as multiple witnesses claim to have seen a hooded figure. Could they all have imagined the same thing?