The Planet of Peril

{{Short description|1929 novel by Otis Adelbert Kline}}

{{Use mdy dates|date=March 2025}}

{{Infobox book

| name = The Planet of Peril

| title_orig =

| translator =

| image = Planet of Peril 1929.jpg

| caption = First edition cover

| author = Otis Adelbert Kline

| illustrator = Robert A. Graef

| country = United States

| language = English

| series = Robert Grandon

| genre = Science fiction novel

| publisher = A. C. McClurg

| release_date = 1929

| english_release_date =

| media_type = Print (Hardback)

| pages = 358

| isbn =

| oclc = 1834793

| preceded_by =

| followed_by = The Prince of Peril

}}

The Planet of Peril, later republished as Planet of Peril, is a 1929 science fiction novel by Otis Adelbert Kline. Originally serialized in six parts in Argosy All-Story Weekly during the summer of 1929, it was published in hardcover later that year by A. C. McClurg and reissued in a lower-price edition by Grosset & Dunlap. It was revived in 1961 as an Avalon Books hardcover and saw its only mass market paperback edition from Ace Books in 1963.[http://www.isfdb.org/cgi-bin/title.cgi?1089563 ISFDB publication history] The later editions, well after Kline's death, were revised and shortened.

Planet of Peril is the first volume in Kline's "Grandon" trilogy. It is a planetary romance, telling the story of Robert Grandon, who exchanges his mind with an inhabitant of Venus, finds himself a slave, escapes his captors, and rises to leadership of an army of rebels. He eventually marries the princess of the oppressive regime and becomes a benevolent emperor."In the Realm of Books", Amazing Stories, March 1930, p.1188