Walter Braden "Jack" Finney (born John Finney; October 2, 1911 – November 14, 1995) was an American writer. His best-known works are science fiction and thrillers, including The Body Snatchers and Time and Again. Themes that persisted throughout his career were a fascination with previous time periods and time travel, and ordinary people encountering extraordinary circumstances. Many of his works were adapted into films or television productions. (Via Wikipedia)