David Grinnell (a pen name of Donald A. Wollheim) was a versatile writer known for his engaging and thought-provoking narratives that traverse the boundaries of space and time. Born in 1914, Grinnell made a name for himself as a poet, author, and literary scholar, captivating readers with his unique blend of historical gothic and science fiction elements Grinnell's work is characterized by its deep exploration of the human condition and the intricate tapestry of history. In “Across Time,” he masterfully weaves a tale that not only delves into the mysteries of time but also probes the depths of the human heart. The novel is a gripping voyage that challenges readers to question the very nature of reality and the limits of human perception As a literary scholar, Grinnell brings a wealth of knowledge and insight to his writing, drawing from a rich background in historical and gothic literature. His ability to seamlessly integrate complex themes and ideas into his narratives has earned him a dedicated following among readers who appreciate both intellectual depth and engaging storytelling Grinnell's contributions to the literary world extend beyond his own writing. He has been involved in various literary communities and events, sharing his passion for storytelling and his unique perspectives on history and the human experience. He played a crucial role in shaping modern science fiction by founding DAW Books, the first publishing company dedicated exclusively to science fiction and fantasy.Under his pseudonym, David Grinnell, Wollheim wrote several novels and stories, including Across Time, published in 1957. The book reflects the adventurous, speculative style popular in mid-20th century science fiction, with themes of time travel and parallel worlds. Across Time is a notable example of his imaginative storytelling. His work continues to inspire and captivate readers, making him a notable figure in contemporary literature.