When Chambers did return to the supernatural, however, he displayed all the imagination and skill which distinguished The King in Yellow. He created the enigmatic and seemingly omniscient Westrel Keen, the ‘Tracer of Lost Persons’, and chronicled the strange adventures of an eminent naturalist who scours the earth for ‘extinct’ animals – and usually finds them. One of his greatest creations, perhaps, was 1920’s The Slayer of Souls, which features a monstrous conspiracy to take over the world: a conspiracy which can only be stopped by supernatural forces.