In The Young Vampire (1920), a London girl is possessed by an extra-dimensional entity which mutates her body and turns her into a living vampire. The Supernatural Assassin (1923) tells the tale of a murderous wraith. Finally, Companions of the Universe (1934) is Rosny's last, great novel, a brilliant scientific romance in which a secret group of physicists attempts to breach the limits of the universe beyond photons, sub-particles and wave-sequences;...