In 1964, Underwood assists a man named David Cohen who is continuning the investigation into an unsolved case which began with Harry Price.

In 1937, Harry Price had attended a seance one evening somewhere in London and experienced something that shook him to the core.

Price testified to experiencing what had appeared to him to be a case of genuine materialisation of a departed spirit: ‘Rosalie’. Price was found to be ‘deeply disturbed, almost distraught, and shaken to the core by the experience’.

“I met Cohen when he addressed the Ghost Club on the Rosalie case at my invitation.

I judged him to be a sincere and honest man, if somewhat credulous on occasions.”

Underwood and Cohen at the Ghost Club

Price and his Spirit Child Rosalie was published in 1965, and Cohen pleaded for information from anyone that would lead to the identification of any of the participants who may have witnesssed the Rosalie materialization.”

Cohen subsequently recieves a mysterious letter in the post.

“The letter he received in April 1966 was handwritten

and signed


“But there was no surname, no address, and care had been taken to obliterate anything in the letter that might have led to identification of the writer…”

“For some years now this anonymous letter has been in my possession, and I am here publishing for the first time a photograph of part of the letter together with a further plea that the writer get in touch with me so that this psychical mystery can be solved once and for all.”

A page from the letter signed ‘Rosalie’.

“It would be nice to close this intriguing case one way or the other but, in spite of intensive investigation by highly qualified researchers over the years, the case, so far, remains a puzzle that refuses to be solved.”

Underwood published part of the letter in The Ghost Hunters (1985)

‘The late Peter Underwood had great personal interest in the mystery of Harry Price and ‘Rosalie’ and,

as he assisted in so many ways with my work on this case,

his absence is felt never more so than now.’

- Paul Adams, The Enigma of Rosalie: Harry Price’s Paranormal Mystery Revisited (2017)