Although Foy states early in this book that his inspiration for mediumship was Clive Chapman's outstanding 'The Blue Room' he blindly goes against Chapman's frank advice to always hold seances in the light.
On one hand, Foy's embrace of victorian spiritualism is commendable - celebrating a more innocent and wonderous time, on the other hand - Foy replicates all of the errors of the victorians that caused the downfall of spiritualism at the beginning of the 20th century.
I propose that this book is worthwile but only if you read it with a critical eye: an alternative title should be 'How not to hold a seance', as Foy places himself entirely within his 'spirit's' guidance with no regard to logical experimentation.
It is also interesting to note how many of his seance 'sitters' leave the group suddenly throughout the book, their departures go uncommented and my theory is that they were suspicious of Foy's circle. Unsuprisingly, considering the conditions.