Kaarlo Nuorvala

Kaarlo Nuorvala (formerly Nylenius, 28 June 1910 − 24 June 1967) was a Finnish writer, screenwriter and director who also made a few appearances in films as an actor. He occasionally used pseudonyms Reino Arras, Hilkka Helovuo and Kalle Kivipää.

Nuorvala wrote several adventure novels, detective novels and books for girls. Some of those were written under pseudonyms Bob Palmer, Roy Milton, Max Dugan and Earl Kennington. Nuorvala was most prolific in the 1940s. In 1945 alone, 27 books were published.

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