Psychologists and researchers who studied Pearl Curran's automatic writings in the 1930s came to the conclusion Patience Worth was a fictitious creation of Curran.[152][153] In 1931 George Valiantine was exposed as a fraud in the séance room as it was discovered that he produced fraudulent "spirit" fingerprints in wax. The "spirit" thumbprint that Valiantine claimed belonged to Arthur Conan Doyle was revealed to be the print of his big toe on his right foot. It was also revealed that Valiantine made some of the prints with his elbow.[154]

or 0330 114 0121 Calls to 0800 are free. First time caller offer: 10 mins for £10! PAY VIA CARD 0488 882 770 Calls will be charged at the standard carrier rate. First time caller offer: 10 mins for $15! PAY VIA CARD 0818 905 855 Calls charged at standard network rate. Mobiles vary. First time caller offer: 10 mins for €10, 20 mins for €35! CALL MY PSYCHICS 0907 995 0123 Calls cost £1.50/min + your phone company's access charge. CALL MY PSYCHICS 1902 220 021 $3.96 per min inc GST. Mobiles may be higher CALL MY PSYCHICS 1570 444 234 Calls cost €1.75/min + your phone company's access charge. CALL MY PSYCHICS 1 844 249 4500 Call for free! First time caller offer: 10 mins for $15! TEXT 'SALLY' +

Colin Fry was exposed in 1992 when during a séance the lights were unexpectedly turned on and he was seen holding a spirit trumpet in the air, which the audience had been led to believe was being levitated by spiritual energy.[183] In 1997, Massimo Polidoro and Luigi Garlaschelli produced wax-moulds directly from one's hand which were exactly the same copies as Gustav Geley obtained from Franek Kluski, which are kept at the Institute Metapsychique International.[184]
In 1876, William Eglinton was exposed as a fraud when the psychical researcher Thomas Colley seized a "spirit" materialization in his séance and cut off a portion of its cloak. It was discovered that the cut piece matched a cloth found in Eglinton's suitcase.[79] Colley also pulled the beard off the materialization and it was revealed to be a fake, the same as another one found in the suitcase of Eglinton.[80] In 1880 in a séance a spirit named "Yohlande" materialized, a sitter grabbed it and was revealed to be the medium Mme. d'Esperance herself.[81]
Some scientists of the period who investigated spiritualism also became converts. They included chemist Robert Hare, physicist William Crookes (1832–1919) and evolutionary biologist Alfred Russel Wallace (1823–1913).[13][14] Nobel laureate Pierre Curie took a very serious scientific interest in the work of medium Eusapia Palladino.[15] Other prominent adherents included journalist and pacifist William T. Stead (1849–1912)[16] and physician and author Arthur Conan Doyle (1859–1930).[17]