Einer Nielsen

[3] He was originally investigated by the Danish Society for Psychical Research who produced a favourable report of his mediumship.

[2][4] Due to the new report by the Norwegians which was negative and covered strongly by the Danish news media, the original report by the Danish Society for Psychical Research was seen as an embarrassment and several members resigned from the society.

[2] The psychical researcher Harry Price sat with Nielsen in Copenhagen with "unsatisfactory results.

[6] In 1932, Johs Carstensen the leader of Nielsen's spiritualist circle wrote a pamphlet which exposed his tricks.

[7] Nielsen continued to work as a medium until his death but was never considered credible again by people outside his small circle of influence.