In 1840, twelve-year-old Mary Jobson lay ill in a Sunderland tenement when the knocks began — always three times.

Then a voice claiming to be Jesus started speaking from her bedside.

Documented in detail by respected physician Dr William Reid Clanny, this is one of the strangest and least-known poltergeist cases of the 19th century.

Heavenly music, family secrets revealed, a miraculous recovery… and the shadow of the cholera epidemic that first hit Britain in Sunderland.

Our featured guest is Historian Stephen Miller of The Poltergeist Project, he tells the full story.