Characters who are mentioned but never appear

Benjamin Bathurst
British diplomat who vanished in 1809 in mysterious circumstances. Referred to in "The Gypsies in the Wood".

External Link: Benjamin Bathurst (Wikipedia).

Hawkshaw the Detective
Referred to in "The Gypsies in the Wood" as a famous detective. A reference to the detective from the 1863 play The Ticket-of-Leave Man.

External Link: The Ticket-of-Leave Man (Wikipedia).

Dr. Martin Hesselius
Referred to in "Angel Down, Sussex" as a "distinguished specialist in supernatural affairs". Presumably a reference to the "occult detective" associated with In A Glass Darkly by Sheridan Le Fanu.

External Link: In a Glass Darkly (Wikipedia).

Dr. John Silence
Referred to in "Angel Down, Sussex". Presumably a reference to Algernon Blackwood's occult detective.

External Link: Algernon Blackwood (Wikipedia).

Mrs. Twemlow
Referred to in "Angel Down, Sussex" as some kind of authority on the occult.

Arthur Edward Waite
A mystic and writer on occult matters. Referred to in "Angel Down, Sussex" by Aleister Crowley as "that dreadful poseur".

External Link: Arthur Edward Waite (Wikipedia)