Author(s): H P LOVECRAFT I N J CULB
The Shadow out of Time.Howard Phillips Lovecraft."The Shadow Out of Time" indirectly tells of the Great Race of Yith, an extraterrestrial species with the ability to travel through space and time. The Yithians accomplish this by switching bodies with hosts from the intended spatial or temporal destination. The story implies that the effect when seen from the outside is similar to spiritual possession.