"The Shadow Out of Time" is a novella written by the American author H.P. Lovecraft, first published in 1936. The story follows Nathaniel Wingate Peaslee, a professor at Miskatonic University, who experiences a mysterious mental affliction that causes him to lose consciousness and undergo bizarre experiences. During these episodes, Peaslee's consciousness seems to be displaced in time, and he finds himself living the life of an ancient extraterrestrial being known as the Great Race of Yith. Through these experiences, Peaslee learns about the history and civilization of the Great Race, as well as their ability to transfer consciousness across time and space. As Peaslee struggles to reconcile his own identity with the memories of his otherworldly experiences, he becomes entangled in a cosmic mystery that transcends human understanding. "The Shadow Out of Time" is celebrated for its exploration of cosmic horror, existential themes, and Lovecraft's signature blend of scientific speculation and supernatural dread.