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Regularly every Sunday, Markham and his friends hold a seance in Badderly Gardens.

But one week, a Frenchman joins them - and conducts a dangerous experiment.

First published in 1900, Sir Arthur Conan Doyle’s tale - abridged by Doreen Estall

Read by Edward De Souza

Sir Arthur Conan Doyle (1859 – 1930) is best known for his many detective stories about Sherlock Holmes.

Producer: Pat McLoughlin

First broadcast on ´óÏó´«Ã½ Radio 4 in May 1989