Win Scott Eckert literary merging between novels, a crossover between multiple works, linking standout fictional characters into a deliberate family and coherent chronology. Farmer's two fictional "biographies" of the fictional characters Tarzan ("Tarzan Alive") and Clark Savage, Jr. ("") proposed that actual meteorite which landed in Wold Newton, Yorkshire, England, on December 13, 1795 caused a genetic mutation in the occupants of a passing coach. Their (fictional) descendants, therefore, became the stalwarts of fantastic fiction. Farmer's initial family trees include such luminaries (and their ancestors and descendants) as Sherlock Holmes, Lord Greystoke, A.J. Raffles, (Conan Doyle's) Professor Challenger, Sir Percy Blakeney, (Poe's) C.
Black Knight (Sir Percy) was a master of swordsmanship, horseback riding and all forms of combat known in Britain at the time of Camelot. He was also a talented poet, singer and musician with the lute. Percy wielded the Ebony Blade, and Merlin's spells rendered the Black Knight invulnerable to physical harm as long as he held the Ebony Blade. However, the spells were ineffective against a weapon made of the same metal as the Ebony Blade. He also wore body armor and a helmet which were similarly rendered impenetrable by Merlin's spells. Sir Percy appeared in the "Spider-Man and His Amazing Friends" episode