After that we lived in growing horror and fascination. Mostly we held to the theory that we were jointly going mad from our life of unnatural excitements, but sometimes it pleased us more to dramatize ourselves as the victims of some creeping and appalling doom. Bizarre manifestations were now too frequent to count. Our lonely house was seemingly alive with the presence of some malign being whose nature we could not guess, and every night that demoniac baying rolled over the wind-swept moor, always louder and louder. On October 29 we found in the soft earth underneath the library window a series of footprints utterly impossible to describe. They were as baffling as the hordes of great bats which haunted the old manor-house in unprecedented and increasing numbers.