After a séance in which he believed he had been contacted by his son Kingsley, who had died in the War, Conan Doyle became a leader of the movement, defending it in lectures around the world.

Sir Arthur Conan Doyle, the famous author of Sherlock Holmes ... Yet, the most striking of all was the loss of his son Kingsley in 1918. By that time, Doyle had already appeared in public as ...

in which his son, brother and two of his nephews were killed. Conan Doyle also twice ran unsuccessfully for parliament. In later life he became very interested in spiritualism. Conan Doyle died of ...